660323028 has 24 divisors (see below), whose sum is σ = 1541394400. Its totient is φ = 220016160.

The previous prime is 660323021. The next prime is 660323029. The reversal of 660323028 is 820323066.

It is a junction number, because it is equal to n+sod(n) for n = 660322986 and 660323004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660323021) 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, 22698 + ... + 42846.

Almost surely, 2^660323028 is an apocalyptic number.

It is an amenable number.

660323028 is an abundant number, since it is smaller than the sum of its proper divisors (881071372).

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

660323028 is a wasteful number, since it uses less digits than its factorization.

660323028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22887 (or 22885 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 660323028 is about 25696.7513121795. The cubic root of 660323028 is about 870.8007899705.

The spelling of 660323028 in words is "six hundred sixty million, three hundred twenty-three thousand, twenty-eight".