63061440 has 224 divisors, whose sum is σ = 223942656. Its totient is φ = 14929920.

The previous prime is 63061433. The next prime is 63061447. The reversal of 63061440 is 4416036.

It is an interprime number because it is at equal distance from previous prime (63061433) and next prime (63061447).

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

It is a self number, because there is not a number n which added to its sum of digits gives 63061440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63061447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 386799 + ... + 386961.

It is an arithmetic number, because the mean of its divisors is an integer number (999744).

Almost surely, 2^63061440 is an apocalyptic number.

63061440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63061440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111971328).

63061440 is an abundant number, since it is smaller than the sum of its proper divisors (160881216).

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

63061440 is a wasteful number, since it uses less digits than its factorization.

63061440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227 (or 217 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 63061440 is about 7941.1233462275. The cubic root of 63061440 is about 398.0350297022.

Adding to 63061440 its reverse (4416036), we get a palindrome (67477476).

The spelling of 63061440 in words is "sixty-three million, sixty-one thousand, four hundred forty".