889657 has 2 divisors, whose sum is σ = 889658. Its totient is φ = 889656.

The previous prime is 889639. The next prime is 889673. The reversal of 889657 is 756988.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 678976 + 210681 = 824^2 + 459^2 .

It is a cyclic number.

It is not a de Polignac number, because 889657 - 2¹⁹ = 365369 is a prime.

It is not a weakly prime, because it can be changed into another prime (889687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 444828 + 444829.

It is an arithmetic number, because the mean of its divisors is an integer number (444829).

2⁸⁸⁹⁶⁵⁷ is an apocalyptic number.

It is an amenable number.

889657 is a deficient number, since it is larger than the sum of its proper divisors (1).

889657 is an equidigital number, since it uses as much as digits as its factorization.

889657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 43.

The square root of 889657 is about 943.2163060507. The cubic root of 889657 is about 96.1776585783.

The spelling of 889657 in words is "eight hundred eighty-nine thousand, six hundred fifty-seven".