136670791 has 2 divisors, whose sum is σ = 136670792. Its totient is φ = 136670790.

The previous prime is 136670771. The next prime is 136670851. The reversal of 136670791 is 197076631.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 136670791 - 2⁵ = 136670759 is a prime.

It is a super-2 number, since 2×136670791² = 37357810225131362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136670731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68335395 + 68335396.

It is an arithmetic number, because the mean of its divisors is an integer number (68335396).

Almost surely, 2^136670791 is an apocalyptic number.

136670791 is a deficient number, since it is larger than the sum of its proper divisors (1).

136670791 is an equidigital number, since it uses as much as digits as its factorization.

136670791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 136670791 is about 11690.6283406838. The cubic root of 136670791 is about 515.1004184113.

The spelling of 136670791 in words is "one hundred thirty-six million, six hundred seventy thousand, seven hundred ninety-one".