659081664 has 56 divisors (see below), whose sum is σ = 1937583120. Its totient is φ = 219693312.

The previous prime is 659081663. The next prime is 659081677. The reversal of 659081664 is 466180956.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (659081663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188979 + ... + 192434.

Almost surely, 2^659081664 is an apocalyptic number.

659081664 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

659081664 is an abundant number, since it is smaller than the sum of its proper divisors (1278501456).

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

659081664 is a wasteful number, since it uses less digits than its factorization.

659081664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381434 (or 381418 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 659081664 is about 25672.5858456058. The cubic root of 659081664 is about 870.2547648659.

The spelling of 659081664 in words is "six hundred fifty-nine million, eighty-one thousand, six hundred sixty-four".