115642565 has 8 divisors (see below), whose sum is σ = 138830328. Its totient is φ = 92474560.

The previous prime is 115642543. The next prime is 115642577. The reversal of 115642565 is 565246511.

It can be written as a sum of positive squares in 4 ways, for example, as 9840769 + 105801796 = 3137^2 + 10286^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 115642565 - 2¹⁰ = 115641541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16079 + ... + 22131.

It is an arithmetic number, because the mean of its divisors is an integer number (17353791).

Almost surely, 2^115642565 is an apocalyptic number.

It is an amenable number.

115642565 is a deficient number, since it is larger than the sum of its proper divisors (23187763).

115642565 is an equidigital number, since it uses as much as digits as its factorization.

115642565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9879.

The product of its digits is 36000, while the sum is 35.

The square root of 115642565 is about 10753.7233086964. The cubic root of 115642565 is about 487.1984582719.

The spelling of 115642565 in words is "one hundred fifteen million, six hundred forty-two thousand, five hundred sixty-five".