799660856 has 8 divisors (see below), whose sum is σ = 1499364120. Its totient is φ = 399830424.

The previous prime is 799660853. The next prime is 799660871. The reversal of 799660856 is 658066997.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (799660853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49978796 + ... + 49978811.

It is an arithmetic number, because the mean of its divisors is an integer number (187420515).

Almost surely, 2^799660856 is an apocalyptic number.

It is an amenable number.

799660856 is a deficient number, since it is larger than the sum of its proper divisors (699703264).

799660856 is a wasteful number, since it uses less digits than its factorization.

799660856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99957613 (or 99957609 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 56.

The square root of 799660856 is about 28278.2753363779. The cubic root of 799660856 is about 928.1865675974.

The spelling of 799660856 in words is "seven hundred ninety-nine million, six hundred sixty thousand, eight hundred fifty-six".