799664 has 40 divisors (see below), whose sum is σ = 1687392. Its totient is φ = 366080.

The previous prime is 799661. The next prime is 799679. The reversal of 799664 is 466997.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (799661) 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, 15062 + ... + 15114.

2⁷⁹⁹⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 799664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (843696).

799664 is an abundant number, since it is smaller than the sum of its proper divisors (887728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

799664 is a wasteful number, since it uses less digits than its factorization.

799664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125 (or 119 counting only the distinct ones).

The product of its digits is 81648, while the sum is 41.

The square root of 799664 is about 894.2393415635. The cubic root of 799664 is about 92.8187784036.

The spelling of 799664 in words is "seven hundred ninety-nine thousand, six hundred sixty-four".