135692861 has 12 divisors (see below), whose sum is σ = 146214972. Its totient is φ = 125491584.

The previous prime is 135692831. The next prime is 135692923. The reversal of 135692861 is 168296531.

It can be written as a sum of positive squares in 2 ways, for example, as 73188025 + 62504836 = 8555^2 + 7906^2 .

It is not a de Polignac number, because 135692861 - 2¹⁸ = 135430717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135692831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58031 + ... + 60323.

It is an arithmetic number, because the mean of its divisors is an integer number (12184581).

Almost surely, 2^135692861 is an apocalyptic number.

It is an amenable number.

135692861 is a deficient number, since it is larger than the sum of its proper divisors (10522111).

135692861 is an equidigital number, since it uses as much as digits as its factorization.

135692861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2428 (or 2369 counting only the distinct ones).

The product of its digits is 77760, while the sum is 41.

The square root of 135692861 is about 11648.7278704586. The cubic root of 135692861 is about 513.8688984680.

The spelling of 135692861 in words is "one hundred thirty-five million, six hundred ninety-two thousand, eight hundred sixty-one".