670556860 has 12 divisors (see below), whose sum is σ = 1408169448. Its totient is φ = 268222736.

The previous prime is 670556833. The next prime is 670556863. The reversal of 670556860 is 68655076.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670556863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16763902 + ... + 16763941.

It is an arithmetic number, because the mean of its divisors is an integer number (117347454).

Almost surely, 2^670556860 is an apocalyptic number.

It is an amenable number.

670556860 is an abundant number, since it is smaller than the sum of its proper divisors (737612588).

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

670556860 is a wasteful number, since it uses less digits than its factorization.

670556860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33527852 (or 33527850 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 43.

The square root of 670556860 is about 25895.1126662928. The cubic root of 670556860 is about 875.2763687542.

The spelling of 670556860 in words is "six hundred seventy million, five hundred fifty-six thousand, eight hundred sixty".