670974389 has 8 divisors (see below), whose sum is σ = 691897920. Its totient is φ = 650268000.

The previous prime is 670974371. The next prime is 670974431. The reversal of 670974389 is 983479076.

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

It is a cyclic number.

It is not a de Polignac number, because 670974389 - 2²⁸ = 402538933 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 670974389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670973389) 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, 47999 + ... + 60380.

It is an arithmetic number, because the mean of its divisors is an integer number (86487240).

Almost surely, 2^670974389 is an apocalyptic number.

It is an amenable number.

670974389 is a deficient number, since it is larger than the sum of its proper divisors (20923531).

670974389 is a wasteful number, since it uses less digits than its factorization.

670974389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108571.

The product of its (nonzero) digits is 2286144, while the sum is 53.

The square root of 670974389 is about 25903.1733384155. The cubic root of 670974389 is about 875.4579976181.

The spelling of 670974389 in words is "six hundred seventy million, nine hundred seventy-four thousand, three hundred eighty-nine".