136736623 has 2 divisors, whose sum is σ = 136736624. Its totient is φ = 136736622.

The previous prime is 136736617. The next prime is 136736657. The reversal of 136736623 is 326637631.

It is a weak prime.

It is an emirp because it is prime and its reverse (326637631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136736623 - 2⁹ = 136736111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136736323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68368311 + 68368312.

It is an arithmetic number, because the mean of its divisors is an integer number (68368312).

Almost surely, 2^136736623 is an apocalyptic number.

136736623 is a deficient number, since it is larger than the sum of its proper divisors (1).

136736623 is an equidigital number, since it uses as much as digits as its factorization.

136736623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 37.

The square root of 136736623 is about 11693.4435903202. The cubic root of 136736623 is about 515.1831101782.

The spelling of 136736623 in words is "one hundred thirty-six million, seven hundred thirty-six thousand, six hundred twenty-three".