56663516 has 48 divisors (see below), whose sum is σ = 129237696. Its totient is φ = 21095424.

The previous prime is 56663507. The next prime is 56663521. The reversal of 56663516 is 61536665.

It is a self number, because there is not a number n which added to its sum of digits gives 56663516.

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, 1610 + ... + 10766.

It is an arithmetic number, because the mean of its divisors is an integer number (2692452).

Almost surely, 2^56663516 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56663516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64618848).

56663516 is an abundant number, since it is smaller than the sum of its proper divisors (72574180).

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

56663516 is a wasteful number, since it uses less digits than its factorization.

56663516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9198 (or 9196 counting only the distinct ones).

The product of its digits is 97200, while the sum is 38.

The square root of 56663516 is about 7527.5172533844. The cubic root of 56663516 is about 384.0913320805.

The spelling of 56663516 in words is "fifty-six million, six hundred sixty-three thousand, five hundred sixteen".