664091496 has 48 divisors (see below), whose sum is σ = 1893247200. Its totient is φ = 209712672.

The previous prime is 664091453. The next prime is 664091501. The reversal of 664091496 is 694190466.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 241356 + ... + 244091.

It is an arithmetic number, because the mean of its divisors is an integer number (39442650).

Almost surely, 2^664091496 is an apocalyptic number.

It is an amenable number.

664091496 is an abundant number, since it is smaller than the sum of its proper divisors (1229155704).

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

664091496 is a wasteful number, since it uses less digits than its factorization.

664091496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485478 (or 485471 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 664091496 is about 25769.9727590077. The cubic root of 664091496 is about 872.4542039383.

The spelling of 664091496 in words is "six hundred sixty-four million, ninety-one thousand, four hundred ninety-six".