136660992 has 192 divisors, whose sum is σ = 412776000. Its totient is φ = 39911424.

The previous prime is 136660991. The next prime is 136661003. The reversal of 136660992 is 299066631.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136660991) 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, 2316259 + ... + 2316317.

It is an arithmetic number, because the mean of its divisors is an integer number (2149875).

Almost surely, 2^136660992 is an apocalyptic number.

136660992 is a gapful number since it is divisible by the number (12) 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 136660992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206388000).

136660992 is an abundant number, since it is smaller than the sum of its proper divisors (276115008).

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

136660992 is a wasteful number, since it uses less digits than its factorization.

136660992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 106 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 42.

The square root of 136660992 is about 11690.2092367930. The cubic root of 136660992 is about 515.0881075886.

The spelling of 136660992 in words is "one hundred thirty-six million, six hundred sixty thousand, nine hundred ninety-two".