670847678 has 4 divisors (see below), whose sum is σ = 1006271520. Its totient is φ = 335423838.

The previous prime is 670847669. The next prime is 670847707. The reversal of 670847678 is 876748076.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167711918 + ... + 167711921.

It is an arithmetic number, because the mean of its divisors is an integer number (251567880).

Almost surely, 2^670847678 is an apocalyptic number.

670847678 is a deficient number, since it is larger than the sum of its proper divisors (335423842).

670847678 is a wasteful number, since it uses less digits than its factorization.

670847678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335423841.

The product of its (nonzero) digits is 3161088, while the sum is 53.

The square root of 670847678 is about 25900.7273643039. The cubic root of 670847678 is about 875.4028851609.

The spelling of 670847678 in words is "six hundred seventy million, eight hundred forty-seven thousand, six hundred seventy-eight".