136645297 has 2 divisors, whose sum is σ = 136645298. Its totient is φ = 136645296.

The previous prime is 136645291. The next prime is 136645339. The reversal of 136645297 is 792546631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134583201 + 2062096 = 11601^2 + 1436^2 .

It is a cyclic number.

It is not a de Polignac number, because 136645297 - 2¹⁵ = 136612529 is a prime.

It is not a weakly prime, because it can be changed into another prime (136645291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68322648 + 68322649.

It is an arithmetic number, because the mean of its divisors is an integer number (68322649).

Almost surely, 2^136645297 is an apocalyptic number.

It is an amenable number.

136645297 is a deficient number, since it is larger than the sum of its proper divisors (1).

136645297 is an equidigital number, since it uses as much as digits as its factorization.

136645297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 43.

The square root of 136645297 is about 11689.5379292768. The cubic root of 136645297 is about 515.0683881909.

The spelling of 136645297 in words is "one hundred thirty-six million, six hundred forty-five thousand, two hundred ninety-seven".