670318907 has 4 divisors (see below), whose sum is σ = 670753200. Its totient is φ = 669884616.

The previous prime is 670318889. The next prime is 670318927. The reversal of 670318907 is 709813076.

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 670318907 - 2¹⁰ = 670317883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (670318927) 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, 214823 + ... + 217920.

It is an arithmetic number, because the mean of its divisors is an integer number (167688300).

Almost surely, 2^670318907 is an apocalyptic number.

670318907 is a deficient number, since it is larger than the sum of its proper divisors (434293).

670318907 is a wasteful number, since it uses less digits than its factorization.

670318907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434292.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 670318907 is about 25890.5177043643. The cubic root of 670318907 is about 875.1728233324.

The spelling of 670318907 in words is "six hundred seventy million, three hundred eighteen thousand, nine hundred seven".