868212771 has 8 divisors (see below), whose sum is σ = 1218544320. Its totient is φ = 548344872.

The previous prime is 868212757. The next prime is 868212773. The reversal of 868212771 is 177212868.

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

It is not a de Polignac number, because 868212771 - 2¹⁵ = 868180003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (868212773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7615845 + ... + 7615958.

It is an arithmetic number, because the mean of its divisors is an integer number (152318040).

Almost surely, 2^868212771 is an apocalyptic number.

868212771 is a deficient number, since it is larger than the sum of its proper divisors (350331549).

868212771 is a wasteful number, since it uses less digits than its factorization.

868212771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15231825.

The product of its digits is 75264, while the sum is 42.

The square root of 868212771 is about 29465.4504632120. The cubic root of 868212771 is about 953.9861213474.

The spelling of 868212771 in words is "eight hundred sixty-eight million, two hundred twelve thousand, seven hundred seventy-one".