136856545 has 32 divisors (see below), whose sum is σ = 201754368. Its totient is φ = 86980608.

The previous prime is 136856543. The next prime is 136856549. The reversal of 136856545 is 545658631.

It is a cyclic number.

It is not a de Polignac number, because 136856545 - 2¹ = 136856543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136856543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38149 + ... + 41581.

It is an arithmetic number, because the mean of its divisors is an integer number (6304824).

Almost surely, 2^136856545 is an apocalyptic number.

It is an amenable number.

136856545 is a deficient number, since it is larger than the sum of its proper divisors (64897823).

136856545 is a wasteful number, since it uses less digits than its factorization.

136856545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3529.

The product of its digits is 432000, while the sum is 43.

The square root of 136856545 is about 11698.5702117823. The cubic root of 136856545 is about 515.3336763662. Note that the first 3 decimals are identical.

The spelling of 136856545 in words is "one hundred thirty-six million, eight hundred fifty-six thousand, five hundred forty-five".