660253402 has 16 divisors (see below), whose sum is σ = 1005287040. Its totient is φ = 325177632.

The previous prime is 660253397. The next prime is 660253417. The reversal of 660253402 is 204352066.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 65278 + ... + 74710.

It is an arithmetic number, because the mean of its divisors is an integer number (62830440).

Almost surely, 2^660253402 is an apocalyptic number.

660253402 is a deficient number, since it is larger than the sum of its proper divisors (345033638).

660253402 is a wasteful number, since it uses less digits than its factorization.

660253402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9957.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 660253402 is about 25695.3965137727. The cubic root of 660253402 is about 870.7701824726.

The spelling of 660253402 in words is "six hundred sixty million, two hundred fifty-three thousand, four hundred two".