670639914 has 24 divisors (see below), whose sum is σ = 1660632480. Its totient is φ = 191611368.

The previous prime is 670639913. The next prime is 670639967. The reversal of 670639914 is 419936076.

670639914 is a `hidden beast` number, since 6 + 7 + 0 + 639 + 9 + 1 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 670639914.

It is not an unprimeable number, because it can be changed into a prime (670639913) 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 11 ways as a sum of consecutive naturals, for example, 2661144 + ... + 2661395.

It is an arithmetic number, because the mean of its divisors is an integer number (69193020).

Almost surely, 2^670639914 is an apocalyptic number.

670639914 is an abundant number, since it is smaller than the sum of its proper divisors (989992566).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

670639914 is a wasteful number, since it uses less digits than its factorization.

670639914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5322554 (or 5322551 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 670639914 is about 25896.7162783238. The cubic root of 670639914 is about 875.3125039958.

The spelling of 670639914 in words is "six hundred seventy million, six hundred thirty-nine thousand, nine hundred fourteen".