670907197 has 4 divisors (see below), whose sum is σ = 670959036. Its totient is φ = 670855360.

The previous prime is 670907191. The next prime is 670907287. The reversal of 670907197 is 791709076.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 14830201 + 656076996 = 3851^2 + 25614^2 .

It is a cyclic number.

It is not a de Polignac number, because 670907197 - 2¹¹ = 670905149 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 (670907191) 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, 11547 + ... + 38407.

It is an arithmetic number, because the mean of its divisors is an integer number (167739759).

Almost surely, 2^670907197 is an apocalyptic number.

It is an amenable number.

670907197 is a deficient number, since it is larger than the sum of its proper divisors (51839).

670907197 is a wasteful number, since it uses less digits than its factorization.

670907197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51838.

The product of its (nonzero) digits is 166698, while the sum is 46.

The square root of 670907197 is about 25901.8763219964. The cubic root of 670907197 is about 875.4287735830.

The spelling of 670907197 in words is "six hundred seventy million, nine hundred seven thousand, one hundred ninety-seven".