682491820 has 24 divisors (see below), whose sum is σ = 1438532928. Its totient is φ = 271987200.

The previous prime is 682491787. The next prime is 682491827. The reversal of 682491820 is 28194286.

It is not an unprimeable number, because it can be changed into a prime (682491827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57541 + ... + 68380.

It is an arithmetic number, because the mean of its divisors is an integer number (59938872).

Almost surely, 2^682491820 is an apocalyptic number.

It is an amenable number.

682491820 is an abundant number, since it is smaller than the sum of its proper divisors (756041108).

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

682491820 is a wasteful number, since it uses less digits than its factorization.

682491820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126201 (or 126199 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 682491820 is about 26124.5443979412. The cubic root of 682491820 is about 880.4387533160.

The spelling of 682491820 in words is "six hundred eighty-two million, four hundred ninety-one thousand, eight hundred twenty".