660747396 has 48 divisors (see below), whose sum is σ = 1589886144. Its totient is φ = 213472896.

The previous prime is 660747383. The next prime is 660747403. The reversal of 660747396 is 693747066.

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, 46530 + ... + 59046.

It is an arithmetic number, because the mean of its divisors is an integer number (33122628).

Almost surely, 2^660747396 is an apocalyptic number.

It is an amenable number.

660747396 is an abundant number, since it is smaller than the sum of its proper divisors (929138748).

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

660747396 is a wasteful number, since it uses less digits than its factorization.

660747396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12660 (or 12658 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 48.

The square root of 660747396 is about 25705.0072164938. The cubic root of 660747396 is about 870.9872950791.

The spelling of 660747396 in words is "six hundred sixty million, seven hundred forty-seven thousand, three hundred ninety-six".