363865 has 8 divisors (see below), whose sum is σ = 444168. Its totient is φ = 286080.

The previous prime is 363841. The next prime is 363871. The reversal of 363865 is 568363.

It can be written as a sum of positive squares in 4 ways, for example, as 256 + 363609 = 16^2 + 603^2 .

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

It is not a de Polignac number, because 363865 - 2⁵ = 363833 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 292 + ... + 901.

It is an arithmetic number, because the mean of its divisors is an integer number (55521).

2³⁶³⁸⁶⁵ is an apocalyptic number.

It is an amenable number.

363865 is a deficient number, since it is larger than the sum of its proper divisors (80303).

363865 is a wasteful number, since it uses less digits than its factorization.

363865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259.

The product of its digits is 12960, while the sum is 31.

The square root of 363865 is about 603.2122346239. The cubic root of 363865 is about 71.3915417589.

The spelling of 363865 in words is "three hundred sixty-three thousand, eight hundred sixty-five".