136775961 has 24 divisors (see below), whose sum is σ = 226151744. Its totient is φ = 78032160.

The previous prime is 136775957. The next prime is 136775971. The reversal of 136775961 is 169577631.

136775961 = T₁₂₆ + T₁₂₇ + ... + T₉₃₆.

It is not a de Polignac number, because 136775961 - 2² = 136775957 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (136775911) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49755 + ... + 52431.

Almost surely, 2^136775961 is an apocalyptic number.

It is an amenable number.

136775961 is a deficient number, since it is larger than the sum of its proper divisors (89375783).

136775961 is a wasteful number, since it uses less digits than its factorization.

136775961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3501 (or 3498 counting only the distinct ones).

The product of its digits is 238140, while the sum is 45.

The square root of 136775961 is about 11695.1255230545. The cubic root of 136775961 is about 515.2325100868.

The spelling of 136775961 in words is "one hundred thirty-six million, seven hundred seventy-five thousand, nine hundred sixty-one".