136887723 has 108 divisors (see below), whose sum is σ = 264892680. Its totient is φ = 67495680.

The previous prime is 136887713. The next prime is 136887769. The reversal of 136887723 is 327788631.

136887723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 136887723 - 2⁶ = 136887659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136887713) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 4415718 + ... + 4415748.

It is an arithmetic number, because the mean of its divisors is an integer number (2452710).

Almost surely, 2^136887723 is an apocalyptic number.

136887723 is a deficient number, since it is larger than the sum of its proper divisors (128004957).

136887723 is a wasteful number, since it uses less digits than its factorization.

136887723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118 (or 77 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 136887723 is about 11699.9026919030. The cubic root of 136887723 is about 515.3728070082.

It can be divided in two parts, 1368877 and 23, that added together give a square (1368900 = 1170²).

The spelling of 136887723 in words is "one hundred thirty-six million, eight hundred eighty-seven thousand, seven hundred twenty-three".