135796661 has 16 divisors (see below), whose sum is σ = 182329728. Its totient is φ = 97675200.

The previous prime is 135796657. The next prime is 135796673. The reversal of 135796661 is 166697531.

It is not a de Polignac number, because 135796661 - 2² = 135796657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135796601) 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, 66830 + ... + 68831.

It is an arithmetic number, because the mean of its divisors is an integer number (11395608).

Almost surely, 2^135796661 is an apocalyptic number.

135796661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

135796661 is a deficient number, since it is larger than the sum of its proper divisors (46533067).

135796661 is a wasteful number, since it uses less digits than its factorization.

135796661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135692.

The product of its digits is 204120, while the sum is 44.

The square root of 135796661 is about 11653.1824408614. The cubic root of 135796661 is about 513.9998952797. Note that the first 3 decimals are identical.

The spelling of 135796661 in words is "one hundred thirty-five million, seven hundred ninety-six thousand, six hundred sixty-one".