366865 has 8 divisors (see below), whose sum is σ = 443520. Its totient is φ = 291312.

The previous prime is 366859. The next prime is 366869. The reversal of 366865 is 568663.

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

It is a cyclic number.

It is not a de Polignac number, because 366865 - 2¹⁷ = 235793 is a prime.

It is an Ulam number.

366865 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 366865.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 366865.

It is not an unprimeable number, because it can be changed into a prime (366869) 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, 1042 + ... + 1348.

It is an arithmetic number, because the mean of its divisors is an integer number (55440).

2³⁶⁶⁸⁶⁵ is an apocalyptic number.

It is an amenable number.

366865 is a deficient number, since it is larger than the sum of its proper divisors (76655).

366865 is a wasteful number, since it uses less digits than its factorization.

366865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551.

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

The square root of 366865 is about 605.6938170396. The cubic root of 366865 is about 71.5872083720.

The spelling of 366865 in words is "three hundred sixty-six thousand, eight hundred sixty-five".