365866 has 4 divisors (see below), whose sum is σ = 548802. Its totient is φ = 182932.

The previous prime is 365851. The next prime is 365903. The reversal of 365866 is 668563.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 335241 + 30625 = 579^2 + 175^2 .

It is a plaindrome in base 12.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 91465 + ... + 91468.

2³⁶⁵⁸⁶⁶ is an apocalyptic number.

365866 is a deficient number, since it is larger than the sum of its proper divisors (182936).

365866 is a wasteful number, since it uses less digits than its factorization.

365866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182935.

The product of its digits is 25920, while the sum is 34.

The square root of 365866 is about 604.8685807678. The cubic root of 365866 is about 71.5221702485.

The spelling of 365866 in words is "three hundred sixty-five thousand, eight hundred sixty-six".