660670504 has 64 divisors (see below), whose sum is σ = 1364912640. Its totient is φ = 297941760.

The previous prime is 660670499. The next prime is 660670519. The reversal of 660670504 is 405076066.

It is a super-2 number, since 2×660670504² = 872971029711228032, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 660670504.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1414479 + ... + 1414945.

It is an arithmetic number, because the mean of its divisors is an integer number (21326760).

Almost surely, 2^660670504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 660670504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (682456320).

660670504 is an abundant number, since it is smaller than the sum of its proper divisors (704242136).

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

660670504 is a wasteful number, since it uses less digits than its factorization.

660670504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770 (or 766 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 660670504 is about 25703.5115110757. The cubic root of 660670504 is about 870.9535078085.

The spelling of 660670504 in words is "six hundred sixty million, six hundred seventy thousand, five hundred four".