799663 has 6 divisors (see below), whose sum is σ = 849776. Its totient is φ = 752352.

The previous prime is 799661. The next prime is 799679. The reversal of 799663 is 366997.

It is not a de Polignac number, because 799663 - 2¹ = 799661 is a prime.

It is a Duffinian number.

It is a congruent 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 5 ways as a sum of consecutive naturals, for example, 1095 + ... + 1672.

2⁷⁹⁹⁶⁶³ is an apocalyptic number.

799663 is a deficient number, since it is larger than the sum of its proper divisors (50113).

799663 is a wasteful number, since it uses less digits than its factorization.

799663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2801 (or 2784 counting only the distinct ones).

The product of its digits is 61236, while the sum is 40.

The square root of 799663 is about 894.2387824289. The cubic root of 799663 is about 92.8187397128.

The spelling of 799663 in words is "seven hundred ninety-nine thousand, six hundred sixty-three".