866886960 has 40 divisors (see below), whose sum is σ = 2687350320. Its totient is φ = 231169792.

The previous prime is 866886947. The next prime is 866886971. The reversal of 866886960 is 69688668.

866886960 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 866886960.

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, 1805775 + ... + 1806254.

It is an arithmetic number, because the mean of its divisors is an integer number (67183758).

Almost surely, 2^866886960 is an apocalyptic number.

866886960 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

866886960 is an abundant number, since it is smaller than the sum of its proper divisors (1820463360).

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

866886960 is a wasteful number, since it uses less digits than its factorization.

866886960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3612045 (or 3612039 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 57.

The square root of 866886960 is about 29442.9441462636. The cubic root of 866886960 is about 953.5002766740.

The spelling of 866886960 in words is "eight hundred sixty-six million, eight hundred eighty-six thousand, nine hundred sixty".