659978495 has 16 divisors (see below), whose sum is σ = 867179520. Its totient is φ = 478202400.

The previous prime is 659978483. The next prime is 659978503. The reversal of 659978495 is 594879956.

It is not a de Polignac number, because 659978495 - 2⁴ = 659978479 is a prime.

It is a super-2 number, since 2×659978495² = 871143227724930050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7235 + ... + 37044.

It is an arithmetic number, because the mean of its divisors is an integer number (54198720).

Almost surely, 2^659978495 is an apocalyptic number.

659978495 is a deficient number, since it is larger than the sum of its proper divisors (207201025).

659978495 is a wasteful number, since it uses less digits than its factorization.

659978495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44566.

The product of its digits is 24494400, while the sum is 62.

The square root of 659978495 is about 25690.0466134260. The cubic root of 659978495 is about 870.6493126930.

The spelling of 659978495 in words is "six hundred fifty-nine million, nine hundred seventy-eight thousand, four hundred ninety-five".