822262721 has 8 divisors (see below), whose sum is σ = 939921024. Its totient is φ = 704652480.

The previous prime is 822262711. The next prime is 822262739. The reversal of 822262721 is 127262228.

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

It is not a de Polignac number, because 822262721 - 2¹⁰ = 822261697 is a prime.

It is a super-2 number, since 2×822262721² = 1352231964692647682, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (822262711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39236 + ... + 56426.

It is an arithmetic number, because the mean of its divisors is an integer number (117490128).

Almost surely, 2^822262721 is an apocalyptic number.

It is an amenable number.

822262721 is a deficient number, since it is larger than the sum of its proper divisors (117658303).

822262721 is a wasteful number, since it uses less digits than its factorization.

822262721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24031.

The product of its digits is 10752, while the sum is 32.

The square root of 822262721 is about 28675.1237312065. The cubic root of 822262721 is about 936.8503003367.

The spelling of 822262721 in words is "eight hundred twenty-two million, two hundred sixty-two thousand, seven hundred twenty-one".