660896970 has 32 divisors (see below), whose sum is σ = 1587537792. Its totient is φ = 176085312.

The previous prime is 660896963. The next prime is 660897011. The reversal of 660896970 is 79698066.

It is a happy number.

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, 27684 + ... + 45696.

It is an arithmetic number, because the mean of its divisors is an integer number (49610556).

Almost surely, 2^660896970 is an apocalyptic number.

660896970 is an abundant number, since it is smaller than the sum of its proper divisors (926640822).

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

660896970 is a wasteful number, since it uses less digits than its factorization.

660896970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19246.

The product of its (nonzero) digits is 979776, while the sum is 51.

The square root of 660896970 is about 25707.9164850052. The cubic root of 660896970 is about 871.0530121874.

The spelling of 660896970 in words is "six hundred sixty million, eight hundred ninety-six thousand, nine hundred seventy".