660097028 has 24 divisors (see below), whose sum is σ = 1169898912. Its totient is φ = 325857024.

The previous prime is 660097019. The next prime is 660097049. The reversal of 660097028 is 820790066.

It is a junction number, because it is equal to n+sod(n) for n = 660096982 and 660097000.

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, 179375 + ... + 183017.

It is an arithmetic number, because the mean of its divisors is an integer number (48745788).

Almost surely, 2^660097028 is an apocalyptic number.

It is an amenable number.

660097028 is a deficient number, since it is larger than the sum of its proper divisors (509801884).

660097028 is a wasteful number, since it uses less digits than its factorization.

660097028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4211 (or 4209 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 660097028 is about 25692.3534928196. The cubic root of 660097028 is about 870.7014328242.

It can be divided in two parts, 66009 and 7028, that added together give a palindrome (73037).

The spelling of 660097028 in words is "six hundred sixty million, ninety-seven thousand, twenty-eight".