136889755 has 4 divisors (see below), whose sum is σ = 164267712. Its totient is φ = 109511800.

The previous prime is 136889747. The next prime is 136889759. The reversal of 136889755 is 557988631.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 136889755 - 2³ = 136889747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136889759) 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, 13688971 + ... + 13688980.

It is an arithmetic number, because the mean of its divisors is an integer number (41066928).

Almost surely, 2^136889755 is an apocalyptic number.

136889755 is a deficient number, since it is larger than the sum of its proper divisors (27377957).

136889755 is an equidigital number, since it uses as much as digits as its factorization.

136889755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27377956.

The product of its digits is 1814400, while the sum is 52.

The square root of 136889755 is about 11699.9895299098. The cubic root of 136889755 is about 515.3753571087.

The spelling of 136889755 in words is "one hundred thirty-six million, eight hundred eighty-nine thousand, seven hundred fifty-five".