670578839 has 4 divisors (see below), whose sum is σ = 766375824. Its totient is φ = 574781856.

The previous prime is 670578833. The next prime is 670578841. The reversal of 670578839 is 938875076.

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-670578839 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 (670578833) 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, 47898482 + ... + 47898495.

It is an arithmetic number, because the mean of its divisors is an integer number (191593956).

Almost surely, 2^670578839 is an apocalyptic number.

670578839 is a deficient number, since it is larger than the sum of its proper divisors (95796985).

670578839 is an equidigital number, since it uses as much as digits as its factorization.

670578839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95796984.

The product of its (nonzero) digits is 2540160, while the sum is 53.

The square root of 670578839 is about 25895.5370479162. The cubic root of 670578839 is about 875.2859316962.

The spelling of 670578839 in words is "six hundred seventy million, five hundred seventy-eight thousand, eight hundred thirty-nine".