136579779 has 12 divisors (see below), whose sum is σ = 225465136. Its totient is φ = 78045552.

The previous prime is 136579777. The next prime is 136579799. The reversal of 136579779 is 977975631.

It is not a de Polignac number, because 136579779 - 2¹ = 136579777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136579777) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1083904 + ... + 1084029.

Almost surely, 2^136579779 is an apocalyptic number.

136579779 is a deficient number, since it is larger than the sum of its proper divisors (88885357).

136579779 is a wasteful number, since it uses less digits than its factorization.

136579779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2167946 (or 2167943 counting only the distinct ones).

The product of its digits is 2500470, while the sum is 54.

The square root of 136579779 is about 11686.7351728359. The cubic root of 136579779 is about 514.9860542301.

It can be divided in two parts, 13657 and 9779, that added together give a triangular number (23436 = T₂₁₆).

The spelling of 136579779 in words is "one hundred thirty-six million, five hundred seventy-nine thousand, seven hundred seventy-nine".