116651664 has 140 divisors (see below), whose sum is σ = 346013196. Its totient is φ = 38071296.

The previous prime is 116651663. The next prime is 116651669. The reversal of 116651664 is 466156611.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 67371264 + 49280400 = 8208^2 + 7020^2 .

It is a super-2 number, since 2×116651664² = 27215221427937792, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116651663) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 851404 + ... + 851540.

Almost surely, 2^116651664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 116651664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173006598).

116651664 is an abundant number, since it is smaller than the sum of its proper divisors (229361532).

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

116651664 is an equidigital number, since it uses as much as digits as its factorization.

116651664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 215 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 116651664 is about 10800.5399865007. The cubic root of 116651664 is about 488.6114569499.

The spelling of 116651664 in words is "one hundred sixteen million, six hundred fifty-one thousand, six hundred sixty-four".