888581 has 4 divisors (see below), whose sum is σ = 897312. Its totient is φ = 879852.

The previous prime is 888557. The next prime is 888623. The reversal of 888581 is 185888.

888581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-888581 is a prime.

It is a super-2 number, since 2×888581² = 1579152387122, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (888541) 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, 4211 + ... + 4416.

It is an arithmetic number, because the mean of its divisors is an integer number (224328).

2⁸⁸⁸⁵⁸¹ is an apocalyptic number.

It is an amenable number.

888581 is a deficient number, since it is larger than the sum of its proper divisors (8731).

888581 is a wasteful number, since it uses less digits than its factorization.

888581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8730.

The product of its digits is 20480, while the sum is 38.

The square root of 888581 is about 942.6457446995. The cubic root of 888581 is about 96.1388687564.

The spelling of 888581 in words is "eight hundred eighty-eight thousand, five hundred eighty-one".