136568649 has 8 divisors (see below), whose sum is σ = 208104640. Its totient is φ = 78039216.

The previous prime is 136568617. The next prime is 136568669. The reversal of 136568649 is 946865631.

136568649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 136568649 - 2⁵ = 136568617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 136568598 and 136568607.

It is not an unprimeable number, because it can be changed into a prime (136568669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3251614 + ... + 3251655.

It is an arithmetic number, because the mean of its divisors is an integer number (26013080).

Almost surely, 2^136568649 is an apocalyptic number.

It is an amenable number.

136568649 is a deficient number, since it is larger than the sum of its proper divisors (71535991).

136568649 is an equidigital number, since it uses as much as digits as its factorization.

136568649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6503279.

The product of its digits is 933120, while the sum is 48.

The square root of 136568649 is about 11686.2589822406. The cubic root of 136568649 is about 514.9720649692.

The spelling of 136568649 in words is "one hundred thirty-six million, five hundred sixty-eight thousand, six hundred forty-nine".