866783382 has 96 divisors (see below), whose sum is σ = 1938235392. Its totient is φ = 257862528.

The previous prime is 866783347. The next prime is 866783417. The reversal of 866783382 is 283387668.

It is an interprime number because it is at equal distance from previous prime (866783347) and next prime (866783417).

It is a super-2 number, since 2×866783382² = 1502626862622715848, which contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6326818 + ... + 6326954.

It is an arithmetic number, because the mean of its divisors is an integer number (20189952).

Almost surely, 2^866783382 is an apocalyptic number.

866783382 is an abundant number, since it is smaller than the sum of its proper divisors (1071452010).

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

866783382 is a wasteful number, since it uses less digits than its factorization.

866783382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330 (or 311 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 51.

The square root of 866783382 is about 29441.1851323957. The cubic root of 866783382 is about 953.4622995636.

The spelling of 866783382 in words is "eight hundred sixty-six million, seven hundred eighty-three thousand, three hundred eighty-two".