136638315 has 24 divisors (see below), whose sum is σ = 258371568. Its totient is φ = 66248640.

The previous prime is 136638289. The next prime is 136638317. The reversal of 136638315 is 513836631.

It is a happy number.

136638315 is a `hidden beast` number, since 1 + 3 + 6 + 638 + 3 + 15 = 666.

It is not a de Polignac number, because 136638315 - 2⁹ = 136637803 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 136638315.

It is not an unprimeable number, because it can be changed into a prime (136638317) 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, 137524 + ... + 138513.

It is an arithmetic number, because the mean of its divisors is an integer number (10765482).

Almost surely, 2^136638315 is an apocalyptic number.

136638315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

136638315 is a deficient number, since it is larger than the sum of its proper divisors (121733253).

136638315 is a wasteful number, since it uses less digits than its factorization.

136638315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276059 (or 276056 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 136638315 is about 11689.2392823485. The cubic root of 136638315 is about 515.0596154320.

The spelling of 136638315 in words is "one hundred thirty-six million, six hundred thirty-eight thousand, three hundred fifteen".