670440680 has 64 divisors (see below), whose sum is σ = 1856615040. Its totient is φ = 212182272.

The previous prime is 670440653. The next prime is 670440697. The reversal of 670440680 is 86044076.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 670440680.

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 15 ways as a sum of consecutive naturals, for example, 88454 + ... + 95733.

It is an arithmetic number, because the mean of its divisors is an integer number (29009610).

Almost surely, 2^670440680 is an apocalyptic number.

It is an amenable number.

670440680 is an abundant number, since it is smaller than the sum of its proper divisors (1186174360).

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

670440680 is a wasteful number, since it uses less digits than its factorization.

670440680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184218 (or 184214 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 670440680 is about 25892.8692886671. The cubic root of 670440680 is about 875.2258160031.

The spelling of 670440680 in words is "six hundred seventy million, four hundred forty thousand, six hundred eighty".