656120332 has 24 divisors (see below), whose sum is σ = 1354572800. Its totient is φ = 272123280.

The previous prime is 656120317. The next prime is 656120419. The reversal of 656120332 is 233021656.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 656120332.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 377082 + ... + 378817.

Almost surely, 2^656120332 is an apocalyptic number.

656120332 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

656120332 is an abundant number, since it is smaller than the sum of its proper divisors (698452468).

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

656120332 is a wasteful number, since it uses less digits than its factorization.

656120332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755941 (or 755939 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 656120332 is about 25614.8459296557. The cubic root of 656120332 is about 868.9494219692.

Adding to 656120332 its reverse (233021656), we get a palindrome (889141988).

The spelling of 656120332 in words is "six hundred fifty-six million, one hundred twenty thousand, three hundred thirty-two".