822039660 has 216 divisors, whose sum is σ = 2750542704. Its totient is φ = 198581760.

The previous prime is 822039653. The next prime is 822039733. The reversal of 822039660 is 66930228.

It is a super-2 number, since 2×822039660² = 1351498405225831200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1855399 + ... + 1855841.

It is an arithmetic number, because the mean of its divisors is an integer number (12733994).

Almost surely, 2^822039660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 822039660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1375271352).

822039660 is an abundant number, since it is smaller than the sum of its proper divisors (1928503044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

822039660 is a wasteful number, since it uses less digits than its factorization.

822039660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545 (or 527 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 822039660 is about 28671.2340159959. The cubic root of 822039660 is about 936.7655773485.

Adding to 822039660 its reverse (66930228), we get a palindrome (888969888).

The spelling of 822039660 in words is "eight hundred twenty-two million, thirty-nine thousand, six hundred sixty".