660475 has 12 divisors (see below), whose sum is σ = 848160. Its totient is φ = 509600.

The previous prime is 660449. The next prime is 660493. The reversal of 660475 is 574066.

It is not a de Polignac number, because 660475 - 2⁷ = 660347 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 270 + ... + 1180.

It is an arithmetic number, because the mean of its divisors is an integer number (70680).

2⁶⁶⁰⁴⁷⁵ is an apocalyptic number.

660475 is a deficient number, since it is larger than the sum of its proper divisors (187685).

660475 is a wasteful number, since it uses less digits than its factorization.

660475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950 (or 945 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 660475 is about 812.6961301741. The cubic root of 660475 is about 87.0867589189.

The spelling of 660475 in words is "six hundred sixty thousand, four hundred seventy-five".