286361 has 4 divisors (see below), whose sum is σ = 288000. Its totient is φ = 284724.

The previous prime is 286333. The next prime is 286367. The reversal of 286361 is 163682.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-286361 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 286361.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (286367) 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, 521 + ... + 918.

It is an arithmetic number, because the mean of its divisors is an integer number (72000).

2²⁸⁶³⁶¹ is an apocalyptic number.

It is an amenable number.

286361 is a deficient number, since it is larger than the sum of its proper divisors (1639).

286361 is a wasteful number, since it uses less digits than its factorization.

286361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1638.

The product of its digits is 1728, while the sum is 26.

The square root of 286361 is about 535.1270877091. The cubic root of 286361 is about 65.9130320707.

The spelling of 286361 in words is "two hundred eighty-six thousand, three hundred sixty-one".