849664 has 18 divisors (see below), whose sum is σ = 1696520. Its totient is φ = 424704.

The previous prime is 849649. The next prime is 849691. The reversal of 849664 is 466948.

It is a zygodrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1404 + ... + 1915.

2⁸⁴⁹⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

849664 is a deficient number, since it is larger than the sum of its proper divisors (846856).

849664 is an equidigital number, since it uses as much as digits as its factorization.

849664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3335 (or 3321 counting only the distinct ones).

The product of its digits is 41472, while the sum is 37.

The square root of 849664 is about 921.7722061334. The cubic root of 849664 is about 94.7143404215.

Adding to 849664 its product of digits (41472), we get a square (891136 = 944²).

The spelling of 849664 in words is "eight hundred forty-nine thousand, six hundred sixty-four".