656716896 has 240 divisors, whose sum is σ = 2177860608. Its totient is φ = 192326400.

The previous prime is 656716891. The next prime is 656716897. The reversal of 656716896 is 698617656.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656716891) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 883501 + ... + 884243.

Almost surely, 2^656716896 is an apocalyptic number.

656716896 is a gapful number since it is divisible by the number (66) 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 656716896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1088930304).

656716896 is an abundant number, since it is smaller than the sum of its proper divisors (1521143712).

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

656716896 is a wasteful number, since it uses less digits than its factorization.

656716896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807 (or 790 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The square root of 656716896 is about 25626.4881714214. The cubic root of 656716896 is about 869.2127003584.

The spelling of 656716896 in words is "six hundred fifty-six million, seven hundred sixteen thousand, eight hundred ninety-six".