136387977 has 8 divisors (see below), whose sum is σ = 198382560. Its totient is φ = 82659360.

The previous prime is 136387969. The next prime is 136387981. The reversal of 136387977 is 779783631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 136387977 - 2³ = 136387969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136387987) 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, 2066452 + ... + 2066517.

It is an arithmetic number, because the mean of its divisors is an integer number (24797820).

Almost surely, 2^136387977 is an apocalyptic number.

It is an amenable number.

136387977 is a deficient number, since it is larger than the sum of its proper divisors (61994583).

136387977 is a wasteful number, since it uses less digits than its factorization.

136387977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4132983.

The product of its digits is 1333584, while the sum is 51.

The square root of 136387977 is about 11678.5263197032. The cubic root of 136387977 is about 514.7448725328.

The spelling of 136387977 in words is "one hundred thirty-six million, three hundred eighty-seven thousand, nine hundred seventy-seven".