866878942 has 8 divisors (see below), whose sum is σ = 1318131216. Its totient is φ = 427501872.

The previous prime is 866878939. The next prime is 866878963. The reversal of 866878942 is 249878668.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2968618 + ... + 2968909.

It is an arithmetic number, because the mean of its divisors is an integer number (164766402).

Almost surely, 2^866878942 is an apocalyptic number.

866878942 is a deficient number, since it is larger than the sum of its proper divisors (451252274).

866878942 is a wasteful number, since it uses less digits than its factorization.

866878942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5937602.

The product of its digits is 9289728, while the sum is 58.

The square root of 866878942 is about 29442.8079842939. The cubic root of 866878942 is about 953.4973369640.

The spelling of 866878942 in words is "eight hundred sixty-six million, eight hundred seventy-eight thousand, nine hundred forty-two".