115666503 has 8 divisors (see below), whose sum is σ = 154796400. Its totient is φ = 76823808.

The previous prime is 115666501. The next prime is 115666519. The reversal of 115666503 is 305666511.

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

It is not a de Polignac number, because 115666503 - 2¹ = 115666501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115666501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70858 + ... + 72471.

It is an arithmetic number, because the mean of its divisors is an integer number (19349550).

Almost surely, 2^115666503 is an apocalyptic number.

115666503 is a deficient number, since it is larger than the sum of its proper divisors (39129897).

115666503 is a wasteful number, since it uses less digits than its factorization.

115666503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143601.

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

The square root of 115666503 is about 10754.8362609572. The cubic root of 115666503 is about 487.2320726309.

The spelling of 115666503 in words is "one hundred fifteen million, six hundred sixty-six thousand, five hundred three".