889664 has 14 divisors (see below), whose sum is σ = 1765554. Its totient is φ = 444800.

The previous prime is 889657. The next prime is 889673. The reversal of 889664 is 466988.

It can be written as a sum of positive squares in only one way, i.e., 846400 + 43264 = 920^2 + 208^2 .

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

889664 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6887 + ... + 7014.

It is an arithmetic number, because the mean of its divisors is an integer number (126111).

2⁸⁸⁹⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

889664 is a deficient number, since it is larger than the sum of its proper divisors (875890).

889664 is a wasteful number, since it uses less digits than its factorization.

889664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13913 (or 13903 counting only the distinct ones).

The product of its digits is 82944, while the sum is 41.

The square root of 889664 is about 943.2200167511. The cubic root of 889664 is about 96.1779108260.

The spelling of 889664 in words is "eight hundred eighty-nine thousand, six hundred sixty-four".