116645780 has 12 divisors (see below), whose sum is σ = 244956180. Its totient is φ = 46658304.

The previous prime is 116645761. The next prime is 116645783. The reversal of 116645780 is 87546611.

It can be written as a sum of positive squares in 2 ways, for example, as 93006736 + 23639044 = 9644^2 + 4862^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116645783) 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, 2916125 + ... + 2916164.

It is an arithmetic number, because the mean of its divisors is an integer number (20413015).

Almost surely, 2^116645780 is an apocalyptic number.

116645780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

116645780 is an abundant number, since it is smaller than the sum of its proper divisors (128310400).

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

116645780 is a wasteful number, since it uses less digits than its factorization.

116645780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5832298 (or 5832296 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 116645780 is about 10800.2675892776. The cubic root of 116645780 is about 488.6032414987.

The spelling of 116645780 in words is "one hundred sixteen million, six hundred forty-five thousand, seven hundred eighty".