136693217 has 2 divisors, whose sum is σ = 136693218. Its totient is φ = 136693216.

The previous prime is 136693181. The next prime is 136693261. The reversal of 136693217 is 712396631.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100320256 + 36372961 = 10016^2 + 6031^2 .

It is a cyclic number.

It is not a de Polignac number, because 136693217 - 2⁸ = 136692961 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (136695217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68346608 + 68346609.

It is an arithmetic number, because the mean of its divisors is an integer number (68346609).

Almost surely, 2^136693217 is an apocalyptic number.

It is an amenable number.

136693217 is a deficient number, since it is larger than the sum of its proper divisors (1).

136693217 is an equidigital number, since it uses as much as digits as its factorization.

136693217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 38.

The square root of 136693217 is about 11691.5874456808. The cubic root of 136693217 is about 515.1285907568.

The spelling of 136693217 in words is "one hundred thirty-six million, six hundred ninety-three thousand, two hundred seventeen".