116564505 has 16 divisors (see below), whose sum is σ = 186684480. Its totient is φ = 62107328.

The previous prime is 116564501. The next prime is 116564521. The reversal of 116564505 is 505465611.

It is a cyclic number.

It is not a de Polignac number, because 116564505 - 2² = 116564501 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (116564501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15274 + ... + 21596.

It is an arithmetic number, because the mean of its divisors is an integer number (11667780).

Almost surely, 2^116564505 is an apocalyptic number.

116564505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

116564505 is a deficient number, since it is larger than the sum of its proper divisors (70119975).

116564505 is a wasteful number, since it uses less digits than its factorization.

116564505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7560.

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 116564505 is about 10796.5042953726. The cubic root of 116564505 is about 488.4897341629.

It can be divided in two parts, 11656 and 4505, that added together give a palindrome (16161).

The spelling of 116564505 in words is "one hundred sixteen million, five hundred sixty-four thousand, five hundred five".