682017820 has 48 divisors (see below), whose sum is σ = 1588085856. Its totient is φ = 243936000.

The previous prime is 682017779. The next prime is 682017829. The reversal of 682017820 is 28710286.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (682017829) 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, 11991 + ... + 38830.

It is an arithmetic number, because the mean of its divisors is an integer number (33085122).

Almost surely, 2^682017820 is an apocalyptic number.

It is an amenable number.

682017820 is an abundant number, since it is smaller than the sum of its proper divisors (906068036).

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

682017820 is a wasteful number, since it uses less digits than its factorization.

682017820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50902 (or 50900 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 682017820 is about 26115.4708937059. The cubic root of 682017820 is about 880.2348804844.

The spelling of 682017820 in words is "six hundred eighty-two million, seventeen thousand, eight hundred twenty".