63340440 has 64 divisors (see below), whose sum is σ = 196162560. Its totient is φ = 16344960.

The previous prime is 63340399. The next prime is 63340451. The reversal of 63340440 is 4404336.

It is a super-2 number, since 2×63340440² = 8024022678787200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 63340440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4794 + ... + 12233.

It is an arithmetic number, because the mean of its divisors is an integer number (3065040).

Almost surely, 2^63340440 is an apocalyptic number.

63340440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63340440 is an abundant number, since it is smaller than the sum of its proper divisors (132822120).

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

63340440 is a wasteful number, since it uses less digits than its factorization.

63340440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17072 (or 17068 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 63340440 is about 7958.6707432837. The cubic root of 63340440 is about 398.6211691919.

Adding to 63340440 its reverse (4404336), we get a palindrome (67744776).

The spelling of 63340440 in words is "sixty-three million, three hundred forty thousand, four hundred forty".