115603665 has 16 divisors (see below), whose sum is σ = 185182848. Its totient is φ = 61582976.

The previous prime is 115603661. The next prime is 115603669. The reversal of 115603665 is 566306511.

It is an interprime number because it is at equal distance from previous prime (115603661) and next prime (115603669).

It is a cyclic number.

It is not a de Polignac number, because 115603665 - 2² = 115603661 is a prime.

It is a super-2 number, since 2×115603665² = 26728414722864450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (115603661) 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, 10252 + ... + 18338.

It is an arithmetic number, because the mean of its divisors is an integer number (11573928).

Almost surely, 2^115603665 is an apocalyptic number.

115603665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

115603665 is a deficient number, since it is larger than the sum of its proper divisors (69579183).

115603665 is an equidigital number, since it uses as much as digits as its factorization.

115603665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9048.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 115603665 is about 10751.9144806867. The cubic root of 115603665 is about 487.1438239901.

It can be divided in two parts, 11560 and 3665, that added together give a triangular number (15225 = T₁₇₄).

The spelling of 115603665 in words is "one hundred fifteen million, six hundred three thousand, six hundred sixty-five".