866886738 has 32 divisors (see below), whose sum is σ = 1772511552. Its totient is φ = 282561600.

The previous prime is 866886733. The next prime is 866886791. The reversal of 866886738 is 837688668.

866886738 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (866886731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56473 + ... + 70163.

It is an arithmetic number, because the mean of its divisors is an integer number (55390986).

Almost surely, 2^866886738 is an apocalyptic number.

866886738 is an abundant number, since it is smaller than the sum of its proper divisors (905624814).

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

866886738 is a wasteful number, since it uses less digits than its factorization.

866886738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13930.

The product of its digits is 18579456, while the sum is 60.

The square root of 866886738 is about 29442.9403762600. The cubic root of 866886738 is about 953.5001952805.

The spelling of 866886738 in words is "eight hundred sixty-six million, eight hundred eighty-six thousand, seven hundred thirty-eight".