660792028 has 72 divisors (see below), whose sum is σ = 1331830080. Its totient is φ = 286191360.

The previous prime is 660792017. The next prime is 660792029. The reversal of 660792028 is 820297066.

It is a super-2 number, since 2×660792028² = 873292208536705568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660792029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 724893 + ... + 725803.

It is an arithmetic number, because the mean of its divisors is an integer number (18497640).

Almost surely, 2^660792028 is an apocalyptic number.

It is an amenable number.

660792028 is an abundant number, since it is smaller than the sum of its proper divisors (671038052).

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

660792028 is a wasteful number, since it uses less digits than its factorization.

660792028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007 (or 992 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 660792028 is about 25705.8753595360. The cubic root of 660792028 is about 871.0069057149.

The spelling of 660792028 in words is "six hundred sixty million, seven hundred ninety-two thousand, twenty-eight".