670446520 has 32 divisors (see below), whose sum is σ = 1518127200. Its totient is φ = 266467968.

The previous prime is 670446487. The next prime is 670446529. The reversal of 670446520 is 25644076.

It is a super-2 number, since 2×670446520² = 898997072360220800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670446529) 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, 47100 + ... + 59659.

It is an arithmetic number, because the mean of its divisors is an integer number (47441475).

Almost surely, 2^670446520 is an apocalyptic number.

It is an amenable number.

670446520 is an abundant number, since it is smaller than the sum of its proper divisors (847680680).

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

670446520 is a wasteful number, since it uses less digits than its factorization.

670446520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106927 (or 106923 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 670446520 is about 25892.9820607824. The cubic root of 670446520 is about 875.2283572689.

The spelling of 670446520 in words is "six hundred seventy million, four hundred forty-six thousand, five hundred twenty".