660740008 has 8 divisors (see below), whose sum is σ = 1238887530. Its totient is φ = 330370000.

The previous prime is 660739967. The next prime is 660740039. The reversal of 660740008 is 800047066.

It can be written as a sum of positive squares in only one way, i.e., 367028964 + 293711044 = 19158^2 + 17138^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41296243 + ... + 41296258.

Almost surely, 2^660740008 is an apocalyptic number.

It is an amenable number.

660740008 is a deficient number, since it is larger than the sum of its proper divisors (578147522).

660740008 is a wasteful number, since it uses less digits than its factorization.

660740008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82592507 (or 82592503 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 660740008 is about 25704.8635086826. The cubic root of 660740008 is about 870.9840488167.

The spelling of 660740008 in words is "six hundred sixty million, seven hundred forty thousand, eight".