670753189 has 4 divisors (see below), whose sum is σ = 671279724. Its totient is φ = 670226656.

The previous prime is 670753183. The next prime is 670753199. The reversal of 670753189 is 981357076.

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

It can be written as a sum of positive squares in 2 ways, for example, as 475676100 + 195077089 = 21810^2 + 13967^2 .

It is a cyclic number.

It is not a de Polignac number, because 670753189 - 2²⁹ = 133882277 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 (670753183) 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, 261352 + ... + 263905.

It is an arithmetic number, because the mean of its divisors is an integer number (167819931).

Almost surely, 2^670753189 is an apocalyptic number.

It is an amenable number.

670753189 is a deficient number, since it is larger than the sum of its proper divisors (526535).

670753189 is a wasteful number, since it uses less digits than its factorization.

670753189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526534.

The product of its (nonzero) digits is 317520, while the sum is 46.

The square root of 670753189 is about 25898.9032393266. The cubic root of 670753189 is about 875.3617830201.

The spelling of 670753189 in words is "six hundred seventy million, seven hundred fifty-three thousand, one hundred eighty-nine".