136909696 has 128 divisors (see below), whose sum is σ = 352512000. Its totient is φ = 51394560.

The previous prime is 136909691. The next prime is 136909697. The reversal of 136909696 is 696909631.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136909691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 285585 + ... + 286063.

It is an arithmetic number, because the mean of its divisors is an integer number (2754000).

Almost surely, 2^136909696 is an apocalyptic number.

136909696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136909696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176256000).

136909696 is an abundant number, since it is smaller than the sum of its proper divisors (215602304).

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

136909696 is a wasteful number, since it uses less digits than its factorization.

136909696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540 (or 528 counting only the distinct ones).

The product of its (nonzero) digits is 472392, while the sum is 49.

The square root of 136909696 is about 11700.8416791272. The cubic root of 136909696 is about 515.4003811412.

The spelling of 136909696 in words is "one hundred thirty-six million, nine hundred nine thousand, six hundred ninety-six".