136315645 has 4 divisors (see below), whose sum is σ = 163578780. Its totient is φ = 109052512.

The previous prime is 136315637. The next prime is 136315657. The reversal of 136315645 is 546513631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 546513631 = 2203 ⋅248077.

It can be written as a sum of positive squares in 2 ways, for example, as 33860761 + 102454884 = 5819^2 + 10122^2 .

It is a cyclic number.

It is not a de Polignac number, because 136315645 - 2³ = 136315637 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 136315645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13631560 + ... + 13631569.

It is an arithmetic number, because the mean of its divisors is an integer number (40894695).

Almost surely, 2^136315645 is an apocalyptic number.

It is an amenable number.

136315645 is a deficient number, since it is larger than the sum of its proper divisors (27263135).

136315645 is an equidigital number, since it uses as much as digits as its factorization.

136315645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27263134.

The product of its digits is 32400, while the sum is 34.

The square root of 136315645 is about 11675.4291141696. The cubic root of 136315645 is about 514.6538598427.

The spelling of 136315645 in words is "one hundred thirty-six million, three hundred fifteen thousand, six hundred forty-five".