136026691 has 2 divisors, whose sum is σ = 136026692. Its totient is φ = 136026690.

The previous prime is 136026679. The next prime is 136026697. The reversal of 136026691 is 196620631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 136026691 - 2⁹ = 136026179 is a prime.

It is not a weakly prime, because it can be changed into another prime (136026697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68013345 + 68013346.

It is an arithmetic number, because the mean of its divisors is an integer number (68013346).

Almost surely, 2^136026691 is an apocalyptic number.

136026691 is a deficient number, since it is larger than the sum of its proper divisors (1).

136026691 is an equidigital number, since it uses as much as digits as its factorization.

136026691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 136026691 is about 11663.0481007325. The cubic root of 136026691 is about 514.2899581256.

The spelling of 136026691 in words is "one hundred thirty-six million, twenty-six thousand, six hundred ninety-one".