136609679 has 2 divisors, whose sum is σ = 136609680. Its totient is φ = 136609678.

The previous prime is 136609657. The next prime is 136609699. The reversal of 136609679 is 976906631.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 136609679 - 2¹² = 136605583 is a prime.

It is a super-4 number, since 4×136609679⁴ (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136609699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68304839 + 68304840.

It is an arithmetic number, because the mean of its divisors is an integer number (68304840).

Almost surely, 2^136609679 is an apocalyptic number.

136609679 is a deficient number, since it is larger than the sum of its proper divisors (1).

136609679 is an equidigital number, since it uses as much as digits as its factorization.

136609679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 367416, while the sum is 47.

The square root of 136609679 is about 11688.0143309289. The cubic root of 136609679 is about 515.0236316802.

The spelling of 136609679 in words is "one hundred thirty-six million, six hundred nine thousand, six hundred seventy-nine".