135870877 has 2 divisors, whose sum is σ = 135870878. Its totient is φ = 135870876.

The previous prime is 135870827. The next prime is 135870883. The reversal of 135870877 is 778078531.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103449241 + 32421636 = 10171^2 + 5694^2 .

It is a cyclic number.

It is not a de Polignac number, because 135870877 - 2²⁷ = 1653149 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135870827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67935438 + 67935439.

It is an arithmetic number, because the mean of its divisors is an integer number (67935439).

Almost surely, 2^135870877 is an apocalyptic number.

It is an amenable number.

135870877 is a deficient number, since it is larger than the sum of its proper divisors (1).

135870877 is an equidigital number, since it uses as much as digits as its factorization.

135870877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 329280, while the sum is 46.

The square root of 135870877 is about 11656.3663720732. The cubic root of 135870877 is about 514.0935158166.

The spelling of 135870877 in words is "one hundred thirty-five million, eight hundred seventy thousand, eight hundred seventy-seven".