667074717 has 8 divisors (see below), whose sum is σ = 988258880. Its totient is φ = 444716460.

The previous prime is 667074697. The next prime is 667074721. The reversal of 667074717 is 717470766.

It is not a de Polignac number, because 667074717 - 2¹⁴ = 667058333 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 (667074757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12353209 + ... + 12353262.

It is an arithmetic number, because the mean of its divisors is an integer number (123532360).

Almost surely, 2^667074717 is an apocalyptic number.

It is an amenable number.

667074717 is a deficient number, since it is larger than the sum of its proper divisors (321184163).

667074717 is a wasteful number, since it uses less digits than its factorization.

667074717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24706480 (or 24706474 counting only the distinct ones).

The product of its (nonzero) digits is 345744, while the sum is 45.

The square root of 667074717 is about 25827.7896266792. The cubic root of 667074717 is about 873.7586607847.

The spelling of 667074717 in words is "six hundred sixty-seven million, seventy-four thousand, seven hundred seventeen".