168012644 has 12 divisors (see below), whose sum is σ = 294201600. Its totient is φ = 83955048.

The previous prime is 168012587. The next prime is 168012661. The reversal of 168012644 is 446210861.

It is a self number, because there is not a number n which added to its sum of digits gives 168012644.

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, 4904 + ... + 18975.

It is an arithmetic number, because the mean of its divisors is an integer number (24516800).

Almost surely, 2^168012644 is an apocalyptic number.

It is an amenable number.

168012644 is a deficient number, since it is larger than the sum of its proper divisors (126188956).

168012644 is a wasteful number, since it uses less digits than its factorization.

168012644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25642 (or 25640 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 168012644 is about 12961.9691405280. The cubic root of 168012644 is about 551.7986777215.

The spelling of 168012644 in words is "one hundred sixty-eight million, twelve thousand, six hundred forty-four".