667074007 has 4 divisors (see below), whose sum is σ = 682587400. Its totient is φ = 651560616.

The previous prime is 667073971. The next prime is 667074017. The reversal of 667074007 is 700470766.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 667074007 - 2⁷ = 667073879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667074017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7756632 + ... + 7756717.

It is an arithmetic number, because the mean of its divisors is an integer number (170646850).

Almost surely, 2^667074007 is an apocalyptic number.

667074007 is a deficient number, since it is larger than the sum of its proper divisors (15513393).

667074007 is a wasteful number, since it uses less digits than its factorization.

667074007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15513392.

The product of its (nonzero) digits is 49392, while the sum is 37.

The square root of 667074007 is about 25827.7758817905. The cubic root of 667074007 is about 873.7583507900.

The spelling of 667074007 in words is "six hundred sixty-seven million, seventy-four thousand, seven".