136534779 has 24 divisors (see below), whose sum is σ = 209264640. Its totient is φ = 85539888.

The previous prime is 136534771. The next prime is 136534781. The reversal of 136534779 is 977435631.

It is not a de Polignac number, because 136534779 - 2³ = 136534771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136534771) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18574 + ... + 24860.

It is an arithmetic number, because the mean of its divisors is an integer number (8719360).

Almost surely, 2^136534779 is an apocalyptic number.

136534779 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

136534779 is a deficient number, since it is larger than the sum of its proper divisors (72729861).

136534779 is a wasteful number, since it uses less digits than its factorization.

136534779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6439 (or 6436 counting only the distinct ones).

The product of its digits is 476280, while the sum is 45.

The square root of 136534779 is about 11684.8097545489. The cubic root of 136534779 is about 514.9294891997.

The spelling of 136534779 in words is "one hundred thirty-six million, five hundred thirty-four thousand, seven hundred seventy-nine".