820550696 has 64 divisors (see below), whose sum is σ = 1868313600. Its totient is φ = 329812992.

The previous prime is 820550693. The next prime is 820550723. The reversal of 820550696 is 696055028.

It is not an unprimeable number, because it can be changed into a prime (820550693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300425 + ... + 303143.

It is an arithmetic number, because the mean of its divisors is an integer number (29192400).

Almost surely, 2^820550696 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 820550696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (934156800).

820550696 is an abundant number, since it is smaller than the sum of its proper divisors (1047762904).

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

820550696 is a wasteful number, since it uses less digits than its factorization.

820550696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3066 (or 3062 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 820550696 is about 28645.2560819414. The cubic root of 820550696 is about 936.1996463359.

The spelling of 820550696 in words is "eight hundred twenty million, five hundred fifty thousand, six hundred ninety-six".