864227212 has 6 divisors (see below), whose sum is σ = 1512397628. Its totient is φ = 432113604.

The previous prime is 864227197. The next prime is 864227213. The reversal of 864227212 is 212722468.

It is a super-2 number, since 2×864227212² = 1493777347922585888, which contains 22 as substring.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (864227213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108028398 + ... + 108028405.

Almost surely, 2^864227212 is an apocalyptic number.

It is an amenable number.

864227212 is a deficient number, since it is larger than the sum of its proper divisors (648170416).

864227212 is a wasteful number, since it uses less digits than its factorization.

864227212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216056807 (or 216056805 counting only the distinct ones).

The product of its digits is 21504, while the sum is 34.

The square root of 864227212 is about 29397.7416139403. The cubic root of 864227212 is about 952.5241138096.

The spelling of 864227212 in words is "eight hundred sixty-four million, two hundred twenty-seven thousand, two hundred twelve".