366805 has 4 divisors (see below), whose sum is σ = 440172. Its totient is φ = 293440.

The previous prime is 366791. The next prime is 366811. The reversal of 366805 is 508663.

366805 = 187² + 188² + ... + 196².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 508663 = 223 ⋅2281.

It can be written as a sum of positive squares in 2 ways, for example, as 224676 + 142129 = 474^2 + 377^2 .

It is not a de Polignac number, because 366805 - 2⁷ = 366677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36676 + ... + 36685.

It is an arithmetic number, because the mean of its divisors is an integer number (110043).

2³⁶⁶⁸⁰⁵ is an apocalyptic number.

It is an amenable number.

366805 is a deficient number, since it is larger than the sum of its proper divisors (73367).

366805 is an equidigital number, since it uses as much as digits as its factorization.

366805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73366.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 366805 is about 605.6442850387. The cubic root of 366805 is about 71.5833055134.

The spelling of 366805 in words is "three hundred sixty-six thousand, eight hundred five".