115666473 has 12 divisors (see below), whose sum is σ = 166998480. Its totient is φ = 71179056.

The previous prime is 115666459. The next prime is 115666489. The reversal of 115666473 is 374666511.

It is not a de Polignac number, because 115666473 - 2⁴ = 115666457 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (115666423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113563 + ... + 114576.

It is an arithmetic number, because the mean of its divisors is an integer number (13916540).

Almost surely, 2^115666473 is an apocalyptic number.

115666473 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

115666473 is a deficient number, since it is larger than the sum of its proper divisors (51332007).

115666473 is a wasteful number, since it uses less digits than its factorization.

115666473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228168 (or 228155 counting only the distinct ones).

The product of its digits is 90720, while the sum is 39.

The square root of 115666473 is about 10754.8348662357. The cubic root of 115666473 is about 487.2320305070.

The spelling of 115666473 in words is "one hundred fifteen million, six hundred sixty-six thousand, four hundred seventy-three".