136858977 has 10 divisors (see below), whose sum is σ = 204443778. Its totient is φ = 91239264.

The previous prime is 136858951. The next prime is 136858991. The reversal of 136858977 is 779858631.

It can be written as a sum of positive squares in only one way, i.e., 107308881 + 29550096 = 10359^2 + 5436^2 .

It is not a de Polignac number, because 136858977 - 2⁶ = 136858913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136857977) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 844728 + ... + 844889.

Almost surely, 2^136858977 is an apocalyptic number.

It is an amenable number.

136858977 is a deficient number, since it is larger than the sum of its proper divisors (67584801).

136858977 is an equidigital number, since it uses as much as digits as its factorization.

136858977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1689629 (or 1689620 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The square root of 136858977 is about 11698.6741556469. The cubic root of 136858977 is about 515.3367289156.

The spelling of 136858977 in words is "one hundred thirty-six million, eight hundred fifty-eight thousand, nine hundred seventy-seven".