136691736 has 32 divisors (see below), whose sum is σ = 343915440. Its totient is φ = 45272448.

The previous prime is 136691657. The next prime is 136691749. The reversal of 136691736 is 637196631.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14371 + ... + 21906.

Almost surely, 2^136691736 is an apocalyptic number.

It is an amenable number.

136691736 is an abundant number, since it is smaller than the sum of its proper divisors (207223704).

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

136691736 is a wasteful number, since it uses less digits than its factorization.

136691736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36443 (or 36439 counting only the distinct ones).

The product of its digits is 122472, while the sum is 42.

The square root of 136691736 is about 11691.5241093709. The cubic root of 136691736 is about 515.1267303665.

The spelling of 136691736 in words is "one hundred thirty-six million, six hundred ninety-one thousand, seven hundred thirty-six".