116643645 has 32 divisors (see below), whose sum is σ = 209946240. Its totient is φ = 62204112.

The previous prime is 116643643. The next prime is 116643671. The reversal of 116643645 is 546346611.

It is a happy number.

116643645 is a `hidden beast` number, since 1 + 1 + 6 + 6 + 4 + 3 + 645 = 666.

It is not a de Polignac number, because 116643645 - 2¹ = 116643643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116643643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5602 + ... + 16268.

It is an arithmetic number, because the mean of its divisors is an integer number (6560820).

Almost surely, 2^116643645 is an apocalyptic number.

116643645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

116643645 is a deficient number, since it is larger than the sum of its proper divisors (93302595).

116643645 is an frugal number, since it uses more digits than its factorization.

116643645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10693 (or 10675 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 116643645 is about 10800.1687486817. The cubic root of 116643645 is about 488.6002604671.

The spelling of 116643645 in words is "one hundred sixteen million, six hundred forty-three thousand, six hundred forty-five".