134665791 has 12 divisors (see below), whose sum is σ = 194429448. Its totient is φ = 82870944.

The previous prime is 134665781. The next prime is 134665807. The reversal of 134665791 is 197566431.

134665791 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 134665791 - 2¹⁰ = 134664767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134665781) 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, 132300 + ... + 133313.

It is an arithmetic number, because the mean of its divisors is an integer number (16202454).

Almost surely, 2^134665791 is an apocalyptic number.

134665791 is a deficient number, since it is larger than the sum of its proper divisors (59763657).

134665791 is a wasteful number, since it uses less digits than its factorization.

134665791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265642 (or 265629 counting only the distinct ones).

The product of its digits is 136080, while the sum is 42.

The square root of 134665791 is about 11604.5590609898. The cubic root of 134665791 is about 512.5691087452.

The spelling of 134665791 in words is "one hundred thirty-four million, six hundred sixty-five thousand, seven hundred ninety-one".