365666 has 8 divisors (see below), whose sum is σ = 626880. Its totient is φ = 156708.

The previous prime is 365641. The next prime is 365669. The reversal of 365666 is 666563.

365666 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (365669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13046 + ... + 13073.

It is an arithmetic number, because the mean of its divisors is an integer number (78360).

2³⁶⁵⁶⁶⁶ is an apocalyptic number.

365666 is a deficient number, since it is larger than the sum of its proper divisors (261214).

365666 is a wasteful number, since it uses less digits than its factorization.

365666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26128.

The product of its digits is 19440, while the sum is 32.

The square root of 365666 is about 604.7032329995. The cubic root of 365666 is about 71.5091353838.

The spelling of 365666 in words is "three hundred sixty-five thousand, six hundred sixty-six".