136636956 has 72 divisors (see below), whose sum is σ = 379295280. Its totient is φ = 42861312.

The previous prime is 136636949. The next prime is 136636963. The reversal of 136636956 is 659636631.

136636956 is a `hidden beast` number, since 1 + 3 + 6 + 636 + 9 + 5 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (136636949) and next prime (136636963).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12390 + ... + 20658.

It is an arithmetic number, because the mean of its divisors is an integer number (5267990).

Almost surely, 2^136636956 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136636956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189647640).

136636956 is an abundant number, since it is smaller than the sum of its proper divisors (242658324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

136636956 is a wasteful number, since it uses less digits than its factorization.

136636956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8305 (or 8291 counting only the distinct ones).

The product of its digits is 524880, while the sum is 45.

The square root of 136636956 is about 11689.1811518173. The cubic root of 136636956 is about 515.0579078379.

The spelling of 136636956 in words is "one hundred thirty-six million, six hundred thirty-six thousand, nine hundred fifty-six".