656554896 has 160 divisors (see below), whose sum is σ = 1976659200. Its totient is φ = 210978432.

The previous prime is 656554819. The next prime is 656554903. The reversal of 656554896 is 698455656.

656554896 is a `hidden beast` number, since 6 + 5 + 6 + 5 + 548 + 96 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 31 ways as a sum of consecutive naturals, for example, 1014445 + ... + 1015091.

It is an arithmetic number, because the mean of its divisors is an integer number (12354120).

Almost surely, 2^656554896 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 656554896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (988329600).

656554896 is an abundant number, since it is smaller than the sum of its proper divisors (1320104304).

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

656554896 is an equidigital number, since it uses as much as digits as its factorization.

656554896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705 (or 681 counting only the distinct ones).

The product of its digits is 7776000, while the sum is 54.

The square root of 656554896 is about 25623.3271844232. The cubic root of 656554896 is about 869.1412215428.

The spelling of 656554896 in words is "six hundred fifty-six million, five hundred fifty-four thousand, eight hundred ninety-six".