107661591 has 6 divisors (see below), whose sum is σ = 155511200. Its totient is φ = 71774388.

The previous prime is 107661569. The next prime is 107661599. The reversal of 107661591 is 195166701.

It is a happy number.

107661591 is a `hidden beast` number, since 1 + 0 + 7 + 6 + 61 + 591 = 666.

It is not a de Polignac number, because 107661591 - 2⁵ = 107661559 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 (107661599) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5981191 + ... + 5981208.

Almost surely, 2^107661591 is an apocalyptic number.

107661591 is a deficient number, since it is larger than the sum of its proper divisors (47849609).

107661591 is a wasteful number, since it uses less digits than its factorization.

107661591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11962405 (or 11962402 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The square root of 107661591 is about 10376.0103604420. The cubic root of 107661591 is about 475.7223962736.

The spelling of 107661591 in words is "one hundred seven million, six hundred sixty-one thousand, five hundred ninety-one".