136720955 has 32 divisors (see below), whose sum is σ = 191600640. Its totient is φ = 91728000.

The previous prime is 136720939. The next prime is 136720967. The reversal of 136720955 is 559027631.

It is a happy number.

It is not a de Polignac number, because 136720955 - 2⁴ = 136720939 is a prime.

It is a super-2 number, since 2×136720955² = 37385239072224050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 544580 + ... + 544830.

It is an arithmetic number, because the mean of its divisors is an integer number (5987520).

Almost surely, 2^136720955 is an apocalyptic number.

136720955 is a deficient number, since it is larger than the sum of its proper divisors (54879685).

136720955 is a wasteful number, since it uses less digits than its factorization.

136720955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539.

The product of its (nonzero) digits is 56700, while the sum is 38.

The square root of 136720955 is about 11692.7736230545. The cubic root of 136720955 is about 515.1634319649.

It can be divided in two parts, 1367 and 20955, that added together give a palindrome (22322).

The spelling of 136720955 in words is "one hundred thirty-six million, seven hundred twenty thousand, nine hundred fifty-five".