799666506 has 20 divisors (see below), whose sum is σ = 1791845682. Its totient is φ = 266555448.

The previous prime is 799666499. The next prime is 799666523. The reversal of 799666506 is 605666997.

It can be written as a sum of positive squares in only one way, i.e., 657460881 + 142205625 = 25641^2 + 11925^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2467945 + ... + 2468268.

Almost surely, 2^799666506 is an apocalyptic number.

799666506 is an abundant number, since it is smaller than the sum of its proper divisors (992179176).

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

799666506 is a wasteful number, since it uses less digits than its factorization.

799666506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4936227 (or 4936218 counting only the distinct ones).

The product of its (nonzero) digits is 3674160, while the sum is 54.

The square root of 799666506 is about 28278.3752362119. The cubic root of 799666506 is about 928.1887536249.

The spelling of 799666506 in words is "seven hundred ninety-nine million, six hundred sixty-six thousand, five hundred six".