368581 has 6 divisors (see below), whose sum is σ = 389382. Its totient is φ = 348840.

The previous prime is 368579. The next prime is 368593. The reversal of 368581 is 185863.

It can be written as a sum of positive squares in only one way, i.e., 324900 + 43681 = 570^2 + 209^2 .

It is not a de Polignac number, because 368581 - 2¹ = 368579 is a prime.

It is a super-2 number, since 2×368581² = 271703907122, which contains 22 as substring.

It is a Duffinian number.

368581 is a lucky number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (368521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 150 + ... + 871.

It is an arithmetic number, because the mean of its divisors is an integer number (64897).

2³⁶⁸⁵⁸¹ is an apocalyptic number.

It is an amenable number.

368581 is a deficient number, since it is larger than the sum of its proper divisors (20801).

368581 is a wasteful number, since it uses less digits than its factorization.

368581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059 (or 1040 counting only the distinct ones).

The product of its digits is 5760, while the sum is 31.

The square root of 368581 is about 607.1087217295. The cubic root of 368581 is about 71.6986504677.

It can be divided in two parts, 368 and 581, that added together give a palindrome (949).

The spelling of 368581 in words is "three hundred sixty-eight thousand, five hundred eighty-one".