166226646 has 16 divisors (see below), whose sum is σ = 352009584. Its totient is φ = 52149504.

The previous prime is 166226633. The next prime is 166226657. The reversal of 166226646 is 646622661.

It is a congruent number.

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, 814735 + ... + 814938.

It is an arithmetic number, because the mean of its divisors is an integer number (22000599).

Almost surely, 2^166226646 is an apocalyptic number.

166226646 is an abundant number, since it is smaller than the sum of its proper divisors (185782938).

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

166226646 is a wasteful number, since it uses less digits than its factorization.

166226646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1629695.

The product of its digits is 124416, while the sum is 39.

The square root of 166226646 is about 12892.8912971451. The cubic root of 166226646 is about 549.8364759043.

The spelling of 166226646 in words is "one hundred sixty-six million, two hundred twenty-six thousand, six hundred forty-six".