136326661 has 2 divisors, whose sum is σ = 136326662. Its totient is φ = 136326660.

The previous prime is 136326629. The next prime is 136326683. The reversal of 136326661 is 166623631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133864900 + 2461761 = 11570^2 + 1569^2 .

It is a cyclic number.

It is not a de Polignac number, because 136326661 - 2⁵ = 136326629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136326601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68163330 + 68163331.

It is an arithmetic number, because the mean of its divisors is an integer number (68163331).

Almost surely, 2^136326661 is an apocalyptic number.

It is an amenable number.

136326661 is a deficient number, since it is larger than the sum of its proper divisors (1).

136326661 is an equidigital number, since it uses as much as digits as its factorization.

136326661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 34.

The square root of 136326661 is about 11675.9008646014. The cubic root of 136326661 is about 514.6677229475.

The spelling of 136326661 in words is "one hundred thirty-six million, three hundred twenty-six thousand, six hundred sixty-one".