670306956 has 24 divisors (see below), whose sum is σ = 1706236224. Its totient is φ = 203123280.

The previous prime is 670306939. The next prime is 670306981. The reversal of 670306956 is 659603076.

It is a super-2 number, since 2×670306956² = 898622830523971872, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2538910 + ... + 2539173.

It is an arithmetic number, because the mean of its divisors is an integer number (71093176).

Almost surely, 2^670306956 is an apocalyptic number.

670306956 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

670306956 is an abundant number, since it is smaller than the sum of its proper divisors (1035929268).

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

670306956 is a wasteful number, since it uses less digits than its factorization.

670306956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5078101 (or 5078099 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 42.

The square root of 670306956 is about 25890.2869045517. The cubic root of 670306956 is about 875.1676221998.

The spelling of 670306956 in words is "six hundred seventy million, three hundred six thousand, nine hundred fifty-six".