660253472 has 12 divisors (see below), whose sum is σ = 1299874086. Its totient is φ = 330126720.

The previous prime is 660253459. The next prime is 660253507. The reversal of 660253472 is 274352066.

It can be written as a sum of positive squares in only one way, i.e., 453008656 + 207244816 = 21284^2 + 14396^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10316429 + ... + 10316492.

Almost surely, 2^660253472 is an apocalyptic number.

It is an amenable number.

660253472 is a deficient number, since it is larger than the sum of its proper divisors (639620614).

660253472 is a wasteful number, since it uses less digits than its factorization.

660253472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20632931 (or 20632923 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 35.

The square root of 660253472 is about 25695.3978758843. The cubic root of 660253472 is about 870.7702132456.

The spelling of 660253472 in words is "six hundred sixty million, two hundred fifty-three thousand, four hundred seventy-two".