659642456 has 32 divisors (see below), whose sum is σ = 1420286400. Its totient is φ = 284055840.

The previous prime is 659642453. The next prime is 659642579. The reversal of 659642456 is 654246956.

It is a self number, because there is not a number n which added to its sum of digits gives 659642456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (659642453) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 195590 + ... + 198933.

It is an arithmetic number, because the mean of its divisors is an integer number (44383950).

Almost surely, 2^659642456 is an apocalyptic number.

It is an amenable number.

659642456 is an abundant number, since it is smaller than the sum of its proper divisors (760643944).

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

659642456 is a wasteful number, since it uses less digits than its factorization.

659642456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394559 (or 394555 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 47.

The square root of 659642456 is about 25683.5055239739. The cubic root of 659642456 is about 870.5015190924.

The spelling of 659642456 in words is "six hundred fifty-nine million, six hundred forty-two thousand, four hundred fifty-six".