136737961 has 8 divisors (see below), whose sum is σ = 137793920. Its totient is φ = 135686448.

The previous prime is 136737949. The next prime is 136737971. The reversal of 136737961 is 169737631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 136737961 - 2²¹ = 134640809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136737901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83230 + ... + 84856.

It is an arithmetic number, because the mean of its divisors is an integer number (17224240).

Almost surely, 2^136737961 is an apocalyptic number.

It is an amenable number.

136737961 is a deficient number, since it is larger than the sum of its proper divisors (1055959).

136737961 is a wasteful number, since it uses less digits than its factorization.

136737961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2223.

The product of its digits is 142884, while the sum is 43.

The square root of 136737961 is about 11693.5008017274. The cubic root of 136737961 is about 515.1847905687.

The spelling of 136737961 in words is "one hundred thirty-six million, seven hundred thirty-seven thousand, nine hundred sixty-one".