670990166 has 32 divisors (see below), whose sum is σ = 1258495488. Its totient is φ = 260663040.

The previous prime is 670990163. The next prime is 670990171. The reversal of 670990166 is 661099076.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670990163) 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, 48191 + ... + 60533.

It is an arithmetic number, because the mean of its divisors is an integer number (39327984).

Almost surely, 2^670990166 is an apocalyptic number.

670990166 is a deficient number, since it is larger than the sum of its proper divisors (587505322).

670990166 is a wasteful number, since it uses less digits than its factorization.

670990166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12716.

The product of its (nonzero) digits is 122472, while the sum is 44.

The square root of 670990166 is about 25903.4778746021. The cubic root of 670990166 is about 875.4648592772.

The spelling of 670990166 in words is "six hundred seventy million, nine hundred ninety thousand, one hundred sixty-six".