136974691 has 16 divisors (see below), whose sum is σ = 159667200. Its totient is φ = 115083360.

The previous prime is 136974679. The next prime is 136974697. The reversal of 136974691 is 196479631.

It is a happy number.

It is not a de Polignac number, because 136974691 - 2¹¹ = 136972643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136974697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97210 + ... + 98608.

It is an arithmetic number, because the mean of its divisors is an integer number (9979200).

Almost surely, 2^136974691 is an apocalyptic number.

136974691 is a deficient number, since it is larger than the sum of its proper divisors (22692509).

136974691 is a wasteful number, since it uses less digits than its factorization.

136974691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1674.

The product of its digits is 244944, while the sum is 46.

The square root of 136974691 is about 11703.6187138850. The cubic root of 136974691 is about 515.4819267372.

The spelling of 136974691 in words is "one hundred thirty-six million, nine hundred seventy-four thousand, six hundred ninety-one".