134195661 has 12 divisors (see below), whose sum is σ = 194104092. Its totient is φ = 89341056.

The previous prime is 134195653. The next prime is 134195687. The reversal of 134195661 is 166591431.

It can be written as a sum of positive squares in 2 ways, for example, as 47817225 + 86378436 = 6915^2 + 9294^2 .

It is not a de Polignac number, because 134195661 - 2³ = 134195653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134195861) 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, 3036 + ... + 16661.

It is an arithmetic number, because the mean of its divisors is an integer number (16175341).

Almost surely, 2^134195661 is an apocalyptic number.

It is an amenable number.

134195661 is a deficient number, since it is larger than the sum of its proper divisors (59908431).

134195661 is a wasteful number, since it uses less digits than its factorization.

134195661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20460 (or 20457 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 134195661 is about 11584.2850879974. The cubic root of 134195661 is about 511.9719388206.

The spelling of 134195661 in words is "one hundred thirty-four million, one hundred ninety-five thousand, six hundred sixty-one".