659902464 has 364 divisors, whose sum is σ = 2256096276. Its totient is φ = 191102976.

The previous prime is 659902427. The next prime is 659902483. The reversal of 659902464 is 464209956.

It can be written as a sum of positive squares in 2 ways, for example, as 298598400 + 361304064 = 17280^2 + 19008^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 38817784 + ... + 38817800.

Almost surely, 2^659902464 is an apocalyptic number.

659902464 is a gapful number since it is divisible by the number (64) 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 659902464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1128048138).

659902464 is an abundant number, since it is smaller than the sum of its proper divisors (1596193812).

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

659902464 is an equidigital number, since it uses as much as digits as its factorization.

659902464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72 (or 35 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 659902464 is about 25688.5667953664. The cubic root of 659902464 is about 870.6158778258.

The spelling of 659902464 in words is "six hundred fifty-nine million, nine hundred two thousand, four hundred sixty-four".