670639915 has 8 divisors (see below), whose sum is σ = 877928688. Its totient is φ = 487738080.

The previous prime is 670639913. The next prime is 670639967. The reversal of 670639915 is 519936076.

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

It is not a de Polignac number, because 670639915 - 2¹ = 670639913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (670639913) 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, 6096672 + ... + 6096781.

It is an arithmetic number, because the mean of its divisors is an integer number (109741086).

Almost surely, 2^670639915 is an apocalyptic number.

670639915 is a deficient number, since it is larger than the sum of its proper divisors (207288773).

670639915 is a wasteful number, since it uses less digits than its factorization.

670639915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12193469.

The product of its (nonzero) digits is 306180, while the sum is 46.

The square root of 670639915 is about 25896.7162976313. The cubic root of 670639915 is about 875.3125044308.

The spelling of 670639915 in words is "six hundred seventy million, six hundred thirty-nine thousand, nine hundred fifteen".