116501661 has 6 divisors (see below), whose sum is σ = 168280190. Its totient is φ = 77667768.

The previous prime is 116501659. The next prime is 116501683. The reversal of 116501661 is 166105611.

116501661 is a `hidden beast` number, since 1 + 1 + 650 + 1 + 6 + 6 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 110376036 + 6125625 = 10506^2 + 2475^2 .

It is not a de Polignac number, because 116501661 - 2¹ = 116501659 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 (116500661) 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, 6472306 + ... + 6472323.

Almost surely, 2^116501661 is an apocalyptic number.

It is an amenable number.

116501661 is a deficient number, since it is larger than the sum of its proper divisors (51778529).

116501661 is a wasteful number, since it uses less digits than its factorization.

116501661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12944635 (or 12944632 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 116501661 is about 10793.5935165264. The cubic root of 116501661 is about 488.4019310836.

The spelling of 116501661 in words is "one hundred sixteen million, five hundred one thousand, six hundred sixty-one".