158728664 has 16 divisors (see below), whose sum is σ = 299961600. Its totient is φ = 78738912.

The previous prime is 158728651. The next prime is 158728667. The reversal of 158728664 is 466827851.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158728667) 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, 77099 + ... + 79130.

It is an arithmetic number, because the mean of its divisors is an integer number (18747600).

Almost surely, 2^158728664 is an apocalyptic number.

It is an amenable number.

158728664 is a deficient number, since it is larger than the sum of its proper divisors (141232936).

158728664 is a wasteful number, since it uses less digits than its factorization.

158728664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156362 (or 156358 counting only the distinct ones).

The product of its digits is 645120, while the sum is 47.

The square root of 158728664 is about 12598.7564465704. The cubic root of 158728664 is about 541.4418076494.

The spelling of 158728664 in words is "one hundred fifty-eight million, seven hundred twenty-eight thousand, six hundred sixty-four".