66040008 has 16 divisors (see below), whose sum is σ = 165100080. Its totient is φ = 22013328.

The previous prime is 66039997. The next prime is 66040033. The reversal of 66040008 is 80004066.

It is a super-2 number, since 2×66040008² = 8722565313280128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 2751667 = 66040008 / (6 + 6 + 0 + 4 + 0 + 0 + 0 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 66040008.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1375810 + ... + 1375857.

It is an arithmetic number, because the mean of its divisors is an integer number (10318755).

Almost surely, 2^66040008 is an apocalyptic number.

It is an amenable number.

66040008 is an abundant number, since it is smaller than the sum of its proper divisors (99060072).

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

66040008 is a wasteful number, since it uses less digits than its factorization.

66040008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2751676 (or 2751672 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 66040008 is about 8126.5003537808. The cubic root of 66040008 is about 404.2056431088.

The spelling of 66040008 in words is "sixty-six million, forty thousand, eight".