166145624 has 16 divisors (see below), whose sum is σ = 329848200. Its totient is φ = 78186112.

The previous prime is 166145599. The next prime is 166145627. The reversal of 166145624 is 426541661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166145627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 610694 + ... + 610965.

Almost surely, 2^166145624 is an apocalyptic number.

It is an amenable number.

166145624 is a deficient number, since it is larger than the sum of its proper divisors (163702576).

166145624 is a wasteful number, since it uses less digits than its factorization.

166145624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221682 (or 1221678 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

The square root of 166145624 is about 12889.7487950697. The cubic root of 166145624 is about 549.7471278325.

The spelling of 166145624 in words is "one hundred sixty-six million, one hundred forty-five thousand, six hundred twenty-four".