166668412 has 12 divisors (see below), whose sum is σ = 294346360. Its totient is φ = 82569456.

The previous prime is 166668401. The next prime is 166668449. The reversal of 166668412 is 214866661.

It is a happy number.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 190698 + ... + 191569.

Almost surely, 2^166668412 is an apocalyptic number.

It is an amenable number.

166668412 is a deficient number, since it is larger than the sum of its proper divisors (127677948).

166668412 is a wasteful number, since it uses less digits than its factorization.

166668412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382380 (or 382378 counting only the distinct ones).

The product of its digits is 82944, while the sum is 40.

The square root of 166668412 is about 12910.0120836504. The cubic root of 166668412 is about 550.3231291303.

The spelling of 166668412 in words is "one hundred sixty-six million, six hundred sixty-eight thousand, four hundred twelve".