660474472 has 32 divisors (see below), whose sum is σ = 1421510400. Its totient is φ = 281818944.

The previous prime is 660474469. The next prime is 660474481. The reversal of 660474472 is 274474066.

It is a Smith number, since the sum of its digits (40) 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 in 7 ways as a sum of consecutive naturals, for example, 12928 + ... + 38575.

It is an arithmetic number, because the mean of its divisors is an integer number (44422200).

Almost surely, 2^660474472 is an apocalyptic number.

It is an amenable number.

660474472 is an abundant number, since it is smaller than the sum of its proper divisors (761035928).

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

660474472 is a wasteful number, since it uses less digits than its factorization.

660474472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51745 (or 51741 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 40.

The square root of 660474472 is about 25699.6978970571. The cubic root of 660474472 is about 870.8673571245.

The spelling of 660474472 in words is "six hundred sixty million, four hundred seventy-four thousand, four hundred seventy-two".