136815583 has 2 divisors, whose sum is σ = 136815584. Its totient is φ = 136815582.

The previous prime is 136815571. The next prime is 136815587. The reversal of 136815583 is 385518631.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136815583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136815587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68407791 + 68407792.

It is an arithmetic number, because the mean of its divisors is an integer number (68407792).

Almost surely, 2^136815583 is an apocalyptic number.

136815583 is a deficient number, since it is larger than the sum of its proper divisors (1).

136815583 is an equidigital number, since it uses as much as digits as its factorization.

136815583 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 40.

The square root of 136815583 is about 11696.8193539953. The cubic root of 136815583 is about 515.2822570633.

The spelling of 136815583 in words is "one hundred thirty-six million, eight hundred fifteen thousand, five hundred eighty-three".