56648646 has 48 divisors (see below), whose sum is σ = 128091600. Its totient is φ = 18763488.

The previous prime is 56648639. The next prime is 56648659. The reversal of 56648646 is 64684665.

56648646 is a `hidden beast` number, since 566 + 4 + 86 + 4 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111040 + ... + 111548.

It is an arithmetic number, because the mean of its divisors is an integer number (2668575).

Almost surely, 2^56648646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56648646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64045800).

56648646 is an abundant number, since it is smaller than the sum of its proper divisors (71442954).

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

56648646 is a wasteful number, since it uses less digits than its factorization.

56648646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755 (or 743 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The square root of 56648646 is about 7526.5294791159. The cubic root of 56648646 is about 384.0577305782.

The spelling of 56648646 in words is "fifty-six million, six hundred forty-eight thousand, six hundred forty-six".