670715808 has 192 divisors, whose sum is σ = 2139540480. Its totient is φ = 179712000.

The previous prime is 670715753. The next prime is 670715831. The reversal of 670715808 is 808517076.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 670715808.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1672408 + ... + 1672808.

It is an arithmetic number, because the mean of its divisors is an integer number (11143440).

Almost surely, 2^670715808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 670715808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1069770240).

670715808 is an abundant number, since it is smaller than the sum of its proper divisors (1468824672).

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

670715808 is a wasteful number, since it uses less digits than its factorization.

670715808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571 (or 563 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 42.

The square root of 670715808 is about 25898.1815577851. The cubic root of 670715808 is about 875.3455214467.

The spelling of 670715808 in words is "six hundred seventy million, seven hundred fifteen thousand, eight hundred eight".