155786864 has 20 divisors (see below), whose sum is σ = 304661304. Its totient is φ = 77164608.

The previous prime is 155786857. The next prime is 155786867. The reversal of 155786864 is 468687551.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155786867) 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, 43787 + ... + 47210.

Almost surely, 2^155786864 is an apocalyptic number.

It is an amenable number.

155786864 is a deficient number, since it is larger than the sum of its proper divisors (148874440).

155786864 is a wasteful number, since it uses less digits than its factorization.

155786864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91112 (or 91106 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 50.

The square root of 155786864 is about 12481.4608119402. The cubic root of 155786864 is about 538.0759878481.

The spelling of 155786864 in words is "one hundred fifty-five million, seven hundred eighty-six thousand, eight hundred sixty-four".