670157166 has 32 divisors (see below), whose sum is σ = 1532816640. Its totient is φ = 191344896.

The previous prime is 670157149. The next prime is 670157171. The reversal of 670157166 is 661751076.

It is a super-2 number, since 2×670157166² = 898221254282303112, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70590 + ... + 79518.

It is an arithmetic number, because the mean of its divisors is an integer number (47900520).

Almost surely, 2^670157166 is an apocalyptic number.

670157166 is an abundant number, since it is smaller than the sum of its proper divisors (862659474).

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

670157166 is a wasteful number, since it uses less digits than its factorization.

670157166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10728.

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 670157166 is about 25887.3939592227. The cubic root of 670157166 is about 875.1024276284.

The spelling of 670157166 in words is "six hundred seventy million, one hundred fifty-seven thousand, one hundred sixty-six".