136679423 has 2 divisors, whose sum is σ = 136679424. Its totient is φ = 136679422.

The previous prime is 136679419. The next prime is 136679441. The reversal of 136679423 is 324976631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 136679423 - 2² = 136679419 is a prime.

It is a super-2 number, since 2×136679423² = 37362529343225858, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136679923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68339711 + 68339712.

It is an arithmetic number, because the mean of its divisors is an integer number (68339712).

Almost surely, 2^136679423 is an apocalyptic number.

136679423 is a deficient number, since it is larger than the sum of its proper divisors (1).

136679423 is an equidigital number, since it uses as much as digits as its factorization.

136679423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 41.

The square root of 136679423 is about 11690.9975194592. The cubic root of 136679423 is about 515.1112626041. Note that the first 3 decimals are identical.

The spelling of 136679423 in words is "one hundred thirty-six million, six hundred seventy-nine thousand, four hundred twenty-three".