682391826 has 12 divisors (see below), whose sum is σ = 1478515662. Its totient is φ = 227463936.

The previous prime is 682391771. The next prime is 682391869. The reversal of 682391826 is 628193286.

It can be written as a sum of positive squares in only one way, i.e., 508547601 + 173844225 = 22551^2 + 13185^2 .

It is a super-2 number, since 2×682391826² = 931317208383228552, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18955311 + ... + 18955346.

Almost surely, 2^682391826 is an apocalyptic number.

682391826 is an abundant number, since it is smaller than the sum of its proper divisors (796123836).

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

682391826 is a wasteful number, since it uses less digits than its factorization.

682391826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37910665 (or 37910662 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 682391826 is about 26122.6305336963. The cubic root of 682391826 is about 880.3957526089.

The spelling of 682391826 in words is "six hundred eighty-two million, three hundred ninety-one thousand, eight hundred twenty-six".