365985 has 16 divisors (see below), whose sum is σ = 650880. Its totient is φ = 195120.

The previous prime is 365983. The next prime is 366001. The reversal of 365985 is 589563.

It is not a de Polignac number, because 365985 - 2¹ = 365983 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 365985.

It is not an unprimeable number, because it can be changed into a prime (365983) 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, 1221 + ... + 1490.

It is an arithmetic number, because the mean of its divisors is an integer number (40680).

2³⁶⁵⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

365985 is a deficient number, since it is larger than the sum of its proper divisors (284895).

365985 is a wasteful number, since it uses less digits than its factorization.

365985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2725 (or 2719 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 365985 is about 604.9669412456. The cubic root of 365985 is about 71.5299237390.

The spelling of 365985 in words is "three hundred sixty-five thousand, nine hundred eighty-five".