136195668 has 144 divisors (see below), whose sum is σ = 419828864. Its totient is φ = 37791360.

The previous prime is 136195651. The next prime is 136195691. The reversal of 136195668 is 866591631.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 251478 + ... + 252018.

Almost surely, 2^136195668 is an apocalyptic number.

136195668 is a gapful number since it is divisible by the number (18) 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 136195668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209914432).

136195668 is an abundant number, since it is smaller than the sum of its proper divisors (283633196).

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

136195668 is a wasteful number, since it uses less digits than its factorization.

136195668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604 (or 590 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 136195668 is about 11670.2899706905. The cubic root of 136195668 is about 514.5028261878.

The spelling of 136195668 in words is "one hundred thirty-six million, one hundred ninety-five thousand, six hundred sixty-eight".