813246722 has 16 divisors (see below), whose sum is σ = 1224863640. Its totient is φ = 404963328.

The previous prime is 813246671. The next prime is 813246727. The reversal of 813246722 is 227642318.

It can be written as a sum of positive squares in 4 ways, for example, as 626951521 + 186295201 = 25039^2 + 13649^2 .

It is a super-2 number, since 2×813246722² = 1322740461687490568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (813246727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 948518 + ... + 949374.

Almost surely, 2^813246722 is an apocalyptic number.

813246722 is a deficient number, since it is larger than the sum of its proper divisors (411616918).

813246722 is a wasteful number, since it uses less digits than its factorization.

813246722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2245.

The product of its digits is 32256, while the sum is 35.

The square root of 813246722 is about 28517.4809897368. The cubic root of 813246722 is about 933.4135630295.

The spelling of 813246722 in words is "eight hundred thirteen million, two hundred forty-six thousand, seven hundred twenty-two".