667407107 has 4 divisors (see below), whose sum is σ = 669765720. Its totient is φ = 665048496.

The previous prime is 667407101. The next prime is 667407179. The reversal of 667407107 is 701704766.

It is a happy number.

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 667407107 - 2¹⁸ = 667144963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667407101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1178882 + ... + 1179447.

It is an arithmetic number, because the mean of its divisors is an integer number (167441430).

Almost surely, 2^667407107 is an apocalyptic number.

667407107 is a deficient number, since it is larger than the sum of its proper divisors (2358613).

667407107 is a wasteful number, since it uses less digits than its factorization.

667407107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2358612.

The product of its (nonzero) digits is 49392, while the sum is 38.

The square root of 667407107 is about 25834.2235610053. The cubic root of 667407107 is about 873.9037621798.

The spelling of 667407107 in words is "six hundred sixty-seven million, four hundred seven thousand, one hundred seven".