816727522 has 16 divisors (see below), whose sum is σ = 1364824440. Its totient is φ = 363952512.

The previous prime is 816727463. The next prime is 816727523. The reversal of 816727522 is 225727618.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 681679881 + 135047641 = 26109^2 + 11621^2 .

It is not an unprimeable number, because it can be changed into a prime (816727523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 540843 + ... + 542350.

Almost surely, 2^816727522 is an apocalyptic number.

816727522 is a deficient number, since it is larger than the sum of its proper divisors (548096918).

816727522 is a wasteful number, since it uses less digits than its factorization.

816727522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1083237.

The product of its digits is 94080, while the sum is 40.

The square root of 816727522 is about 28578.4450591700. The cubic root of 816727522 is about 934.7433773888.

The spelling of 816727522 in words is "eight hundred sixteen million, seven hundred twenty-seven thousand, five hundred twenty-two".