665959504 has 20 divisors (see below), whose sum is σ = 1474624864. Its totient is φ = 285411168.

The previous prime is 665959477. The next prime is 665959529. The reversal of 665959504 is 405959566.

665959504 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×665959504³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2972922 + ... + 2973145.

Almost surely, 2^665959504 is an apocalyptic number.

It is an amenable number.

665959504 is an abundant number, since it is smaller than the sum of its proper divisors (808665360).

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

665959504 is a wasteful number, since it uses less digits than its factorization.

665959504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5946082 (or 5946076 counting only the distinct ones).

The product of its (nonzero) digits is 1458000, while the sum is 49.

The square root of 665959504 is about 25806.1911951377. The cubic root of 665959504 is about 873.2714737116.

The spelling of 665959504 in words is "six hundred sixty-five million, nine hundred fifty-nine thousand, five hundred four".