866800822 has 4 divisors (see below), whose sum is σ = 1300201236. Its totient is φ = 433400410.

The previous prime is 866800819. The next prime is 866800829. The reversal of 866800822 is 228008668.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866800829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 216700204 + ... + 216700207.

It is an arithmetic number, because the mean of its divisors is an integer number (325050309).

Almost surely, 2^866800822 is an apocalyptic number.

866800822 is a deficient number, since it is larger than the sum of its proper divisors (433400414).

866800822 is a wasteful number, since it uses less digits than its factorization.

866800822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433400413.

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 866800822 is about 29441.4813146350. The cubic root of 866800822 is about 953.4686941913.

The spelling of 866800822 in words is "eight hundred sixty-six million, eight hundred thousand, eight hundred twenty-two".