822721036 has 12 divisors (see below), whose sum is σ = 1446219712. Its totient is φ = 409515408.

The previous prime is 822721019. The next prime is 822721037. The reversal of 822721036 is 630127228.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 822720989 and 822721007.

It is not an unprimeable number, because it can be changed into a prime (822721037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 460275 + ... + 462058.

Almost surely, 2^822721036 is an apocalyptic number.

It is an amenable number.

822721036 is a deficient number, since it is larger than the sum of its proper divisors (623498676).

822721036 is a wasteful number, since it uses less digits than its factorization.

822721036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922560 (or 922558 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 822721036 is about 28683.1141266077. The cubic root of 822721036 is about 937.0243293845.

The spelling of 822721036 in words is "eight hundred twenty-two million, seven hundred twenty-one thousand, thirty-six".