155763864 has 32 divisors (see below), whose sum is σ = 432678000. Its totient is φ = 51921216.

The previous prime is 155763857. The next prime is 155763869. The reversal of 155763864 is 468367551.

155763864 is a `hidden beast` number, since 1 + 5 + 5 + 7 + 638 + 6 + 4 = 666.

155763864 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155763869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 360349 + ... + 360780.

Almost surely, 2^155763864 is an apocalyptic number.

It is an amenable number.

155763864 is an abundant number, since it is smaller than the sum of its proper divisors (276914136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155763864 is a wasteful number, since it uses less digits than its factorization.

155763864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721144 (or 721134 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 155763864 is about 12480.5394114197. The cubic root of 155763864 is about 538.0495064608.

The spelling of 155763864 in words is "one hundred fifty-five million, seven hundred sixty-three thousand, eight hundred sixty-four".