866274863 has 8 divisors (see below), whose sum is σ = 896480400. Its totient is φ = 836091648.

The previous prime is 866274841. The next prime is 866274883. The reversal of 866274863 is 368472668.

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

It is a cyclic number.

It is not a de Polignac number, because 866274863 - 2¹² = 866270767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866274803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127568 + ... + 134186.

It is an arithmetic number, because the mean of its divisors is an integer number (112060050).

Almost surely, 2^866274863 is an apocalyptic number.

866274863 is a deficient number, since it is larger than the sum of its proper divisors (30205537).

866274863 is a wasteful number, since it uses less digits than its factorization.

866274863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11161.

The product of its digits is 2322432, while the sum is 50.

The square root of 866274863 is about 29432.5476810962. The cubic root of 866274863 is about 953.2758060086.

The spelling of 866274863 in words is "eight hundred sixty-six million, two hundred seventy-four thousand, eight hundred sixty-three".