670984161 has 8 divisors (see below), whose sum is σ = 896713440. Its totient is φ = 446288832.

The previous prime is 670984157. The next prime is 670984177. The reversal of 670984161 is 161489076.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 670984161 - 2² = 670984157 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (670983161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256971 + ... + 259568.

It is an arithmetic number, because the mean of its divisors is an integer number (112089180).

Almost surely, 2^670984161 is an apocalyptic number.

It is an amenable number.

670984161 is a deficient number, since it is larger than the sum of its proper divisors (225729279).

670984161 is a wasteful number, since it uses less digits than its factorization.

670984161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516975.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 670984161 is about 25903.3619632665. The cubic root of 670984161 is about 875.4622476234.

The spelling of 670984161 in words is "six hundred seventy million, nine hundred eighty-four thousand, one hundred sixty-one".