660204671 has 8 divisors (see below), whose sum is σ = 772066944. Its totient is φ = 552729240.

The previous prime is 660204617. The next prime is 660204683. The reversal of 660204671 is 176402066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-660204671 is a prime.

It is a super-2 number, since 2×660204671² = 871740415220436482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660204271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1096385 + ... + 1096986.

It is an arithmetic number, because the mean of its divisors is an integer number (96508368).

Almost surely, 2^660204671 is an apocalyptic number.

660204671 is a deficient number, since it is larger than the sum of its proper divisors (111862273).

660204671 is a wasteful number, since it uses less digits than its factorization.

660204671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2193421.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 660204671 is about 25694.4482524922. The cubic root of 660204671 is about 870.7487591092.

The spelling of 660204671 in words is "six hundred sixty million, two hundred four thousand, six hundred seventy-one".