799987659 has 8 divisors (see below), whose sum is σ = 1066929360. Its totient is φ = 533185536.

The previous prime is 799987651. The next prime is 799987687. The reversal of 799987659 is 956789997.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 799987659 - 2³ = 799987651 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 799987593 and 799987602.

It is not an unprimeable number, because it can be changed into a prime (799987651) 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, 20694 + ... + 45035.

It is an arithmetic number, because the mean of its divisors is an integer number (133366170).

Almost surely, 2^799987659 is an apocalyptic number.

799987659 is a deficient number, since it is larger than the sum of its proper divisors (266941701).

799987659 is a wasteful number, since it uses less digits than its factorization.

799987659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69789.

The product of its digits is 77157360, while the sum is 69.

The square root of 799987659 is about 28284.0530865009. The cubic root of 799987659 is about 928.3129932107.

The spelling of 799987659 in words is "seven hundred ninety-nine million, nine hundred eighty-seven thousand, six hundred fifty-nine".