665613496 has 16 divisors (see below), whose sum is σ = 1248357600. Its totient is φ = 332718144.

The previous prime is 665613479. The next prime is 665613497. The reversal of 665613496 is 694316566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665613497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29665 + ... + 47023.

It is an arithmetic number, because the mean of its divisors is an integer number (78022350).

Almost surely, 2^665613496 is an apocalyptic number.

It is an amenable number.

665613496 is a deficient number, since it is larger than the sum of its proper divisors (582744104).

665613496 is a wasteful number, since it uses less digits than its factorization.

665613496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22158 (or 22154 counting only the distinct ones).

The product of its digits is 699840, while the sum is 46.

The square root of 665613496 is about 25799.4863514761. The cubic root of 665613496 is about 873.1202076263.

The spelling of 665613496 in words is "six hundred sixty-five million, six hundred thirteen thousand, four hundred ninety-six".