660901264 has 15 divisors (see below), whose sum is σ = 1280695467. Its totient is φ = 330399216.

The previous prime is 660901261. The next prime is 660901279. The reversal of 660901264 is 462109066.

The square root of 660901264 is 25708.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660901261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 99619 + ... + 106045.

Almost surely, 2^660901264 is an apocalyptic number.

660901264 is the 25708-th square number.

It is an amenable number.

660901264 is a deficient number, since it is larger than the sum of its proper divisors (619794203).

660901264 is an frugal number, since it uses more digits than its factorization.

660901264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12862 (or 6429 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The cubic root of 660901264 is about 871.0548986607.

The spelling of 660901264 in words is "six hundred sixty million, nine hundred one thousand, two hundred sixty-four".