666700707 has 8 divisors (see below), whose sum is σ = 889202880. Its totient is φ = 444332840.

The previous prime is 666700703. The next prime is 666700711. The reversal of 666700707 is 707007666.

It is an interprime number because it is at equal distance from previous prime (666700703) and next prime (666700711).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 666700707 - 2² = 666700703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (666700703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21357 + ... + 42302.

It is an arithmetic number, because the mean of its divisors is an integer number (111150360).

Almost surely, 2^666700707 is an apocalyptic number.

666700707 is a deficient number, since it is larger than the sum of its proper divisors (222502173).

666700707 is a wasteful number, since it uses less digits than its factorization.

666700707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67153.

The product of its (nonzero) digits is 74088, while the sum is 39.

The square root of 666700707 is about 25820.5481545222. The cubic root of 666700707 is about 873.5953329683.

The spelling of 666700707 in words is "six hundred sixty-six million, seven hundred thousand, seven hundred seven".