136749636 has 27 divisors (see below), whose sum is σ = 345850141. Its totient is φ = 45559824.

The previous prime is 136749629. The next prime is 136749653. The reversal of 136749636 is 636947631.

The square root of 136749636 is 11694.

It is a perfect power (a square), and thus also a powerful number.

136749636 is a `hidden beast` number, since 1 + 3 + 6 + 7 + 4 + 9 + 636 = 666.

It can be written as a sum of positive squares in only one way, i.e., 110124036 + 26625600 = 10494^2 + 5160^2 .

It is a super-2 number, since 2×136749636² = 37400925892264992, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136749591 and 136749600.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 69190 + ... + 71138.

Almost surely, 2^136749636 is an apocalyptic number.

136749636 is the 11694-th square number.

It is an amenable number.

136749636 is an abundant number, since it is smaller than the sum of its proper divisors (209100505).

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

136749636 is an equidigital number, since it uses as much as digits as its factorization.

136749636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3908 (or 1954 counting only the distinct ones).

The product of its digits is 489888, while the sum is 45.

The cubic root of 136749636 is about 515.1994527035.

The spelling of 136749636 in words is "one hundred thirty-six million, seven hundred forty-nine thousand, six hundred thirty-six".