136638337 has 8 divisors (see below), whose sum is σ = 149719392. Its totient is φ = 123667200.

The previous prime is 136638319. The next prime is 136638361. The reversal of 136638337 is 733836631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 136638337 - 2²⁷ = 2420609 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 136638337.

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 7 ways as a sum of consecutive naturals, for example, 24864 + ... + 29857.

It is an arithmetic number, because the mean of its divisors is an integer number (18714924).

Almost surely, 2^136638337 is an apocalyptic number.

It is an amenable number.

136638337 is a deficient number, since it is larger than the sum of its proper divisors (13081055).

136638337 is a wasteful number, since it uses less digits than its factorization.

136638337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54959.

The product of its digits is 163296, while the sum is 40.

The square root of 136638337 is about 11689.2402233849. The cubic root of 136638337 is about 515.0596430751.

The spelling of 136638337 in words is "one hundred thirty-six million, six hundred thirty-eight thousand, three hundred thirty-seven".