665854496 has 24 divisors (see below), whose sum is σ = 1311595740. Its totient is φ = 332750848.

The previous prime is 665854489. The next prime is 665854517. The reversal of 665854496 is 694458566.

It can be written as a sum of positive squares in 2 ways, for example, as 646176400 + 19678096 = 25420^2 + 4436^2 .

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, 73040 + ... + 81648.

Almost surely, 2^665854496 is an apocalyptic number.

It is an amenable number.

665854496 is a deficient number, since it is larger than the sum of its proper divisors (645741244).

665854496 is a wasteful number, since it uses less digits than its factorization.

665854496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11036 (or 11028 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 53.

The square root of 665854496 is about 25804.1565643987. The cubic root of 665854496 is about 873.2255723665.

The spelling of 665854496 in words is "six hundred sixty-five million, eight hundred fifty-four thousand, four hundred ninety-six".