136620427 has 2 divisors, whose sum is σ = 136620428. Its totient is φ = 136620426.

The previous prime is 136620413. The next prime is 136620433. The reversal of 136620427 is 724026631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 136620427 - 2¹⁹ = 136096139 is a prime.

It is not a weakly prime, because it can be changed into another prime (136620457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68310213 + 68310214.

It is an arithmetic number, because the mean of its divisors is an integer number (68310214).

Almost surely, 2^136620427 is an apocalyptic number.

136620427 is a deficient number, since it is larger than the sum of its proper divisors (1).

136620427 is an equidigital number, since it uses as much as digits as its factorization.

136620427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 136620427 is about 11688.4741091385. The cubic root of 136620427 is about 515.0371381142.

The spelling of 136620427 in words is "one hundred thirty-six million, six hundred twenty thousand, four hundred twenty-seven".