116994581 has 16 divisors (see below), whose sum is σ = 131673600. Its totient is φ = 103042800.

The previous prime is 116994569. The next prime is 116994601. The reversal of 116994581 is 185499611.

It is a cyclic number.

It is not a de Polignac number, because 116994581 - 2¹⁰ = 116993557 is a prime.

It is a super-2 number, since 2×116994581² = 27375463966731122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116994511) 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, 44810 + ... + 47348.

It is an arithmetic number, because the mean of its divisors is an integer number (8229600).

Almost surely, 2^116994581 is an apocalyptic number.

116994581 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

116994581 is a deficient number, since it is larger than the sum of its proper divisors (14679019).

116994581 is a wasteful number, since it uses less digits than its factorization.

116994581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2680.

The product of its digits is 77760, while the sum is 44.

The square root of 116994581 is about 10816.4033301278. The cubic root of 116994581 is about 489.0897734847.

The spelling of 116994581 in words is "one hundred sixteen million, nine hundred ninety-four thousand, five hundred eighty-one".