670157156 has 12 divisors (see below), whose sum is σ = 1182010368. Its totient is φ = 332439912.

The previous prime is 670157149. The next prime is 670157171. The reversal of 670157156 is 651751076.

It is a super-2 number, since 2×670157156² = 898221227476016672, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 659096 + ... + 660111.

It is an arithmetic number, because the mean of its divisors is an integer number (98500864).

Almost surely, 2^670157156 is an apocalyptic number.

It is an amenable number.

670157156 is a deficient number, since it is larger than the sum of its proper divisors (511853212).

670157156 is a wasteful number, since it uses less digits than its factorization.

670157156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319338 (or 1319336 counting only the distinct ones).

The product of its (nonzero) digits is 44100, while the sum is 38.

The square root of 670157156 is about 25887.3937660785. The cubic root of 670157156 is about 875.1024232757.

The spelling of 670157156 in words is "six hundred seventy million, one hundred fifty-seven thousand, one hundred fifty-six".