116610640 has 20 divisors (see below), whose sum is σ = 271119924. Its totient is φ = 46644224.

The previous prime is 116610631. The next prime is 116610647. The reversal of 116610640 is 46016611.

It can be written as a sum of positive squares in 2 ways, for example, as 91087936 + 25522704 = 9544^2 + 5052^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×116610640² = 27196082722419200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116610647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 728737 + ... + 728896.

Almost surely, 2^116610640 is an apocalyptic number.

116610640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

116610640 is an abundant number, since it is smaller than the sum of its proper divisors (154509284).

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

116610640 is a wasteful number, since it uses less digits than its factorization.

116610640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1457646 (or 1457640 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 116610640 is about 10798.6406551936. The cubic root of 116610640 is about 488.5541720216.

The spelling of 116610640 in words is "one hundred sixteen million, six hundred ten thousand, six hundred forty".