662889 has 8 divisors (see below), whose sum is σ = 895360. Its totient is φ = 436176.

The previous prime is 662867. The next prime is 662897. The reversal of 662889 is 988266.

662889 is digitally balanced in base 2, 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 not a de Polignac number, because 662889 - 2¹³ = 654697 is a prime.

It is a Duffinian number.

662889 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (662819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1162 + ... + 1635.

It is an arithmetic number, because the mean of its divisors is an integer number (111920).

2⁶⁶²⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

662889 is a deficient number, since it is larger than the sum of its proper divisors (232471).

662889 is a wasteful number, since it uses less digits than its factorization.

662889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2879.

The product of its digits is 41472, while the sum is 39.

The square root of 662889 is about 814.1799555381. The cubic root of 662889 is about 87.1927290321.

It can be divided in two parts, 662 and 889, that added together give a palindrome (1551).

The spelling of 662889 in words is "six hundred sixty-two thousand, eight hundred eighty-nine".