116564565 has 16 divisors (see below), whose sum is σ = 200850048. Its totient is φ = 57385536.

The previous prime is 116564561. The next prime is 116564573. The reversal of 116564565 is 565465611.

It is not a de Polignac number, because 116564565 - 2² = 116564561 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116564561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 298689 + ... + 299078.

It is an arithmetic number, because the mean of its divisors is an integer number (12553128).

Almost surely, 2^116564565 is an apocalyptic number.

116564565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

116564565 is a deficient number, since it is larger than the sum of its proper divisors (84285483).

116564565 is a wasteful number, since it uses less digits than its factorization.

116564565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597788.

The product of its digits is 108000, while the sum is 39.

The square root of 116564565 is about 10796.5070740495. The cubic root of 116564565 is about 488.4898179773.

The spelling of 116564565 in words is "one hundred sixteen million, five hundred sixty-four thousand, five hundred sixty-five".