136699638 has 8 divisors (see below), whose sum is σ = 273399288. Its totient is φ = 45566544.

The previous prime is 136699579. The next prime is 136699663. The reversal of 136699638 is 836996631.

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

136699638 is an admirable number.

It is a congruent number.

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, 11391631 + ... + 11391642.

It is an arithmetic number, because the mean of its divisors is an integer number (34174911).

Almost surely, 2^136699638 is an apocalyptic number.

136699638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

136699638 is a wasteful number, since it uses less digits than its factorization.

136699638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22783278.

The product of its digits is 1259712, while the sum is 51.

The square root of 136699638 is about 11691.8620416083. The cubic root of 136699638 is about 515.1366564798.

The spelling of 136699638 in words is "one hundred thirty-six million, six hundred ninety-nine thousand, six hundred thirty-eight".