136645340 has 96 divisors (see below), whose sum is σ = 329280000. Its totient is φ = 47215872.

The previous prime is 136645339. The next prime is 136645373. The reversal of 136645340 is 43546631.

It is a junction number, because it is equal to n+sod(n) for n = 136645297 and 136645306.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 686561 + ... + 686759.

It is an arithmetic number, because the mean of its divisors is an integer number (3430000).

Almost surely, 2^136645340 is an apocalyptic number.

136645340 is a gapful number since it is divisible by the number (10) 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 136645340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164640000).

136645340 is an abundant number, since it is smaller than the sum of its proper divisors (192634660).

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

136645340 is a wasteful number, since it uses less digits than its factorization.

136645340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379 (or 377 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 136645340 is about 11689.5397685281. The cubic root of 136645340 is about 515.0684422187.

The spelling of 136645340 in words is "one hundred thirty-six million, six hundred forty-five thousand, three hundred forty".