822268491 has 16 divisors (see below), whose sum is σ = 1258976640. Its totient is φ = 472115520.

The previous prime is 822268487. The next prime is 822268543. The reversal of 822268491 is 194862228.

It is not a de Polignac number, because 822268491 - 2² = 822268487 is a prime.

It is a super-3 number, since 3×822268491³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (822268411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 655090 + ... + 656343.

It is an arithmetic number, because the mean of its divisors is an integer number (78686040).

Almost surely, 2^822268491 is an apocalyptic number.

822268491 is a deficient number, since it is larger than the sum of its proper divisors (436708149).

822268491 is a wasteful number, since it uses less digits than its factorization.

822268491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311466.

The product of its digits is 110592, while the sum is 42.

The square root of 822268491 is about 28675.2243408835. The cubic root of 822268491 is about 936.8524916937.

The spelling of 822268491 in words is "eight hundred twenty-two million, two hundred sixty-eight thousand, four hundred ninety-one".