670290979 has 4 divisors (see below), whose sum is σ = 670394880. Its totient is φ = 670187080.

The previous prime is 670290961. The next prime is 670290983. The reversal of 670290979 is 979092076.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-670290979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (673290979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41584 + ... + 55405.

It is an arithmetic number, because the mean of its divisors is an integer number (167598720).

Almost surely, 2^670290979 is an apocalyptic number.

670290979 is a deficient number, since it is larger than the sum of its proper divisors (103901).

670290979 is an equidigital number, since it uses as much as digits as its factorization.

670290979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103900.

The product of its (nonzero) digits is 428652, while the sum is 49.

The square root of 670290979 is about 25889.9783507055. The cubic root of 670290979 is about 875.1606688361.

The spelling of 670290979 in words is "six hundred seventy million, two hundred ninety thousand, nine hundred seventy-nine".