663492712 has 8 divisors (see below), whose sum is σ = 1244048850. Its totient is φ = 331746352.

The previous prime is 663492703. The next prime is 663492733. The reversal of 663492712 is 217294366.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 578594916 + 84897796 = 24054^2 + 9214^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×663492712² = 880445157754229888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41468287 + ... + 41468302.

Almost surely, 2^663492712 is an apocalyptic number.

It is an amenable number.

663492712 is a deficient number, since it is larger than the sum of its proper divisors (580556138).

663492712 is a wasteful number, since it uses less digits than its factorization.

663492712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82936595 (or 82936591 counting only the distinct ones).

The product of its digits is 108864, while the sum is 40.

The square root of 663492712 is about 25758.3522764947. The cubic root of 663492712 is about 872.1919063923.

The spelling of 663492712 in words is "six hundred sixty-three million, four hundred ninety-two thousand, seven hundred twelve".