666008007 has 16 divisors (see below), whose sum is σ = 1068284160. Its totient is φ = 360545472.

The previous prime is 666007933. The next prime is 666008011. The reversal of 666008007 is 700800666.

It is not a de Polignac number, because 666008007 - 2⁷ = 666007879 is a prime.

It is a super-2 number, since 2×666008007² = 887133330776224098, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666008027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 834198 + ... + 834995.

It is an arithmetic number, because the mean of its divisors is an integer number (66767760).

Almost surely, 2^666008007 is an apocalyptic number.

666008007 is a deficient number, since it is larger than the sum of its proper divisors (402276153).

666008007 is a wasteful number, since it uses less digits than its factorization.

666008007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1669222.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 666008007 is about 25807.1309331355. The cubic root of 666008007 is about 873.2926738285.

The spelling of 666008007 in words is "six hundred sixty-six million, eight thousand, seven".