66317008 has 40 divisors (see below), whose sum is σ = 134741376. Its totient is φ = 31584000.

The previous prime is 66316963. The next prime is 66317021. The reversal of 66317008 is 80071366.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 27033 + ... + 29383.

Almost surely, 2^66317008 is an apocalyptic number.

66317008 is the 4702-nd octagonal number.

It is an amenable number.

66317008 is an abundant number, since it is smaller than the sum of its proper divisors (68424368).

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

66317008 is a wasteful number, since it uses less digits than its factorization.

66317008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2443 (or 2437 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 66317008 is about 8143.5255264535. The cubic root of 66317008 is about 404.7699918389.

It can be divided in two parts, 663 and 17008, that added together give a palindrome (17671).

The spelling of 66317008 in words is "sixty-six million, three hundred seventeen thousand, eight".