664962744 has 16 divisors (see below), whose sum is σ = 1662406920. Its totient is φ = 221654240.

The previous prime is 664962737. The next prime is 664962761. The reversal of 664962744 is 447269466.

It is a junction number, because it is equal to n+sod(n) for n = 664962693 and 664962702.

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, 13853367 + ... + 13853414.

Almost surely, 2^664962744 is an apocalyptic number.

It is an amenable number.

664962744 is an abundant number, since it is smaller than the sum of its proper divisors (997444176).

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

664962744 is a wasteful number, since it uses less digits than its factorization.

664962744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27706790 (or 27706786 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 48.

The square root of 664962744 is about 25786.8715434812. The cubic root of 664962744 is about 872.8355729789.

The spelling of 664962744 in words is "six hundred sixty-four million, nine hundred sixty-two thousand, seven hundred forty-four".