670256907504 has 80 divisors (see below), whose sum is σ = 1841218752672. Its totient is φ = 209374142464.

The previous prime is 670256907503. The next prime is 670256907613. The reversal of 670256907504 is 405709652076.

It is a super-2 number, since 2×670256907504² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670256907503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1572519 + ... + 1952774.

Almost surely, 2^670256907504 is an apocalyptic number.

It is an amenable number.

670256907504 is an abundant number, since it is smaller than the sum of its proper divisors (1170961845168).

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

670256907504 is a wasteful number, since it uses less digits than its factorization.

670256907504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3525554 (or 3525548 counting only the distinct ones).

The product of its (nonzero) digits is 3175200, while the sum is 51.

The spelling of 670256907504 in words is "six hundred seventy billion, two hundred fifty-six million, nine hundred seven thousand, five hundred four".