135692691 has 16 divisors (see below), whose sum is σ = 193996800. Its totient is φ = 84060288.

The previous prime is 135692651. The next prime is 135692701. The reversal of 135692691 is 196296531.

It is not a de Polignac number, because 135692691 - 2²² = 131498387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135692651) 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, 12811 + ... + 20868.

It is an arithmetic number, because the mean of its divisors is an integer number (12124800).

Almost surely, 2^135692691 is an apocalyptic number.

135692691 is a deficient number, since it is larger than the sum of its proper divisors (58304109).

135692691 is a wasteful number, since it uses less digits than its factorization.

135692691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33778.

The product of its digits is 87480, while the sum is 42.

The square root of 135692691 is about 11648.7205735222. The cubic root of 135692691 is about 513.8686838712.

The spelling of 135692691 in words is "one hundred thirty-five million, six hundred ninety-two thousand, six hundred ninety-one".