664099674 has 32 divisors (see below), whose sum is σ = 1519046016. Its totient is φ = 189604800.

The previous prime is 664099669. The next prime is 664099729. The reversal of 664099674 is 476990466.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62124 + ... + 72024.

It is an arithmetic number, because the mean of its divisors is an integer number (47470188).

Almost surely, 2^664099674 is an apocalyptic number.

664099674 is an abundant number, since it is smaller than the sum of its proper divisors (854946342).

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

664099674 is a wasteful number, since it uses less digits than its factorization.

664099674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11510.

The product of its (nonzero) digits is 1959552, while the sum is 51.

The square root of 664099674 is about 25770.1314315624. The cubic root of 664099674 is about 872.4577852225.

The spelling of 664099674 in words is "six hundred sixty-four million, ninety-nine thousand, six hundred seventy-four".