136889636 has 12 divisors (see below), whose sum is σ = 257984412. Its totient is φ = 63179808.

The previous prime is 136889591. The next prime is 136889651. The reversal of 136889636 is 636988631.

It can be written as a sum of positive squares in 2 ways, for example, as 33988900 + 102900736 = 5830^2 + 10144^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1316195 + ... + 1316298.

It is an arithmetic number, because the mean of its divisors is an integer number (21498701).

Almost surely, 2^136889636 is an apocalyptic number.

It is an amenable number.

136889636 is a deficient number, since it is larger than the sum of its proper divisors (121094776).

136889636 is a wasteful number, since it uses less digits than its factorization.

136889636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2632510 (or 2632508 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 50.

The square root of 136889636 is about 11699.9844444341. The cubic root of 136889636 is about 515.3752077679.

The spelling of 136889636 in words is "one hundred thirty-six million, eight hundred eighty-nine thousand, six hundred thirty-six".