799666997 has 4 divisors (see below), whose sum is σ = 800401056. Its totient is φ = 798932940.

The previous prime is 799666981. The next prime is 799666999.

799666997 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 799666997 - 2⁴ = 799666981 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 (799666999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 365393 + ... + 367574.

It is an arithmetic number, because the mean of its divisors is an integer number (200100264).

Almost surely, 2^799666997 is an apocalyptic number.

It is an amenable number.

799666997 is a deficient number, since it is larger than the sum of its proper divisors (734059).

799666997 is a wasteful number, since it uses less digits than its factorization.

799666997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734058.

The product of its digits is 69441624, while the sum is 68.

The square root of 799666997 is about 28278.3839177560. The cubic root of 799666997 is about 928.1889435960.

The spelling of 799666997 in words is "seven hundred ninety-nine million, six hundred sixty-six thousand, nine hundred ninety-seven".