116666640 has 120 divisors (see below), whose sum is σ = 404521728. Its totient is φ = 30101760.

The previous prime is 116666617. The next prime is 116666657. The reversal of 116666640 is 46666611.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×116666640² = 27222209777779200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 116666595 and 116666604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19707 + ... + 24933.

Almost surely, 2^116666640 is an apocalyptic number.

116666640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 116666640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202260864).

116666640 is an abundant number, since it is smaller than the sum of its proper divisors (287855088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

116666640 is a wasteful number, since it uses less digits than its factorization.

116666640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5277 (or 5268 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 116666640 is about 10801.2332629196. The cubic root of 116666640 is about 488.6323657303.

The spelling of 116666640 in words is "one hundred sixteen million, six hundred sixty-six thousand, six hundred forty".