116642565 has 32 divisors (see below), whose sum is σ = 223319040. Its totient is φ = 57423168.

The previous prime is 116642551. The next prime is 116642569. The reversal of 116642565 is 565246611.

116642565 is a `hidden beast` number, since 1 + 1 + 6 + 642 + 5 + 6 + 5 = 666.

It is not a de Polignac number, because 116642565 - 2¹⁰ = 116641541 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116642569) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31477 + ... + 34986.

It is an arithmetic number, because the mean of its divisors is an integer number (6978720).

Almost surely, 2^116642565 is an apocalyptic number.

116642565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

116642565 is a deficient number, since it is larger than the sum of its proper divisors (106676475).

116642565 is a wasteful number, since it uses less digits than its factorization.

116642565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66490 (or 66484 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 116642565 is about 10800.1187493472. The cubic root of 116642565 is about 488.5987524841.

The spelling of 116642565 in words is "one hundred sixteen million, six hundred forty-two thousand, five hundred sixty-five".