116667981 has 12 divisors (see below), whose sum is σ = 170894880. Its totient is φ = 76682760.

The previous prime is 116667979. The next prime is 116668009. The reversal of 116667981 is 189766611.

It is not a de Polignac number, because 116667981 - 2¹ = 116667979 is a prime.

It is a super-2 number, since 2×116667981² = 27222835581232722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116667781) 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, 90651 + ... + 91928.

It is an arithmetic number, because the mean of its divisors is an integer number (14241240).

Almost surely, 2^116667981 is an apocalyptic number.

It is an amenable number.

116667981 is a deficient number, since it is larger than the sum of its proper divisors (54226899).

116667981 is a wasteful number, since it uses less digits than its factorization.

116667981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182656 (or 182653 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 116667981 is about 10801.2953389860. The cubic root of 116667981 is about 488.6342378835.

The spelling of 116667981 in words is "one hundred sixteen million, six hundred sixty-seven thousand, nine hundred eighty-one".