63496440 has 256 divisors, whose sum is σ = 249523200. Its totient is φ = 14059008.

The previous prime is 63496409. The next prime is 63496453. The reversal of 63496440 is 4469436.

63496440 is a `hidden beast` number, since 6 + 3 + 4 + 9 + 644 + 0 = 666.

63496440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 63496395 and 63496404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 279607 + ... + 279833.

It is an arithmetic number, because the mean of its divisors is an integer number (974700).

Almost surely, 2^63496440 is an apocalyptic number.

63496440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

63496440 is the 5040-th heptagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63496440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124761600).

63496440 is an abundant number, since it is smaller than the sum of its proper divisors (186026760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63496440 is a wasteful number, since it uses less digits than its factorization.

63496440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 63496440 is about 7968.4653478571. The cubic root of 63496440 is about 398.9481531366.

It can be divided in two parts, 63496 and 440, that added together give a palindrome (63936).

The spelling of 63496440 in words is "sixty-three million, four hundred ninety-six thousand, four hundred forty".