768889966 has 16 divisors (see below), whose sum is σ = 1270939824. Its totient is φ = 346618944.

The previous prime is 768889949. The next prime is 768889987. The reversal of 768889966 is 669988867.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 342751 + ... + 344986.

It is an arithmetic number, because the mean of its divisors is an integer number (79433739).

Almost surely, 2^768889966 is an apocalyptic number.

768889966 is a deficient number, since it is larger than the sum of its proper divisors (502049858).

768889966 is a wasteful number, since it uses less digits than its factorization.

768889966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687795.

The product of its digits is 62705664, while the sum is 67.

The square root of 768889966 is about 27728.8652129870. The cubic root of 768889966 is about 916.1249924779.

The spelling of 768889966 in words is "seven hundred sixty-eight million, eight hundred eighty-nine thousand, nine hundred sixty-six".