888689 has 2 divisors, whose sum is σ = 888690. Its totient is φ = 888688.

The previous prime is 888683. The next prime is 888691. The reversal of 888689 is 986888.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 795664 + 93025 = 892^2 + 305^2 .

It is a cyclic number.

It is not a de Polignac number, because 888689 - 2¹² = 884593 is a prime.

It is a Sophie Germain prime.

Together with 888691, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (888683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 444344 + 444345.

It is an arithmetic number, because the mean of its divisors is an integer number (444345).

2⁸⁸⁸⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

888689 is a deficient number, since it is larger than the sum of its proper divisors (1).

888689 is an equidigital number, since it uses as much as digits as its factorization.

888689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 221184, while the sum is 47.

The square root of 888689 is about 942.7030285302. The cubic root of 888689 is about 96.1427635719.

The spelling of 888689 in words is "eight hundred eighty-eight thousand, six hundred eighty-nine".