670039491 has 8 divisors (see below), whose sum is σ = 974602944. Its totient is φ = 406084520.

The previous prime is 670039483. The next prime is 670039493. The reversal of 670039491 is 194930076.

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 670039491 - 2³ = 670039483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (670039493) 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, 10152081 + ... + 10152146.

It is an arithmetic number, because the mean of its divisors is an integer number (121825368).

Almost surely, 2^670039491 is an apocalyptic number.

670039491 is a deficient number, since it is larger than the sum of its proper divisors (304563453).

670039491 is a wasteful number, since it uses less digits than its factorization.

670039491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20304241.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 670039491 is about 25885.1210350657. The cubic root of 670039491 is about 875.0512039695.

The spelling of 670039491 in words is "six hundred seventy million, thirty-nine thousand, four hundred ninety-one".