135864877 has 12 divisors (see below), whose sum is σ = 143918940. Its totient is φ = 128241792.

The previous prime is 135864871. The next prime is 135864881. The reversal of 135864877 is 778468531.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 57471561 + 78393316 = 7581^2 + 8854^2 .

It is a de Polignac number, because none of the positive numbers 2^k-135864877 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135864877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135864871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134149 + ... + 135157.

It is an arithmetic number, because the mean of its divisors is an integer number (11993245).

Almost surely, 2^135864877 is an apocalyptic number.

It is an amenable number.

135864877 is a deficient number, since it is larger than the sum of its proper divisors (8054063).

135864877 is a wasteful number, since it uses less digits than its factorization.

135864877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1420 (or 1401 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 49.

The square root of 135864877 is about 11656.1089991472. The cubic root of 135864877 is about 514.0859483217.

The spelling of 135864877 in words is "one hundred thirty-five million, eight hundred sixty-four thousand, eight hundred seventy-seven".