670165207 has 4 divisors (see below), whose sum is σ = 705437080. Its totient is φ = 634893336.

The previous prime is 670165193. The next prime is 670165217. The reversal of 670165207 is 702561076.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-670165207 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 (670165217) 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, 17635908 + ... + 17635945.

It is an arithmetic number, because the mean of its divisors is an integer number (176359270).

Almost surely, 2^670165207 is an apocalyptic number.

670165207 is a deficient number, since it is larger than the sum of its proper divisors (35271873).

670165207 is a wasteful number, since it uses less digits than its factorization.

670165207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35271872.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 670165207 is about 25887.5492660082. The cubic root of 670165207 is about 875.1059276385.

The spelling of 670165207 in words is "six hundred seventy million, one hundred sixty-five thousand, two hundred seven".