682447321 has 8 divisors (see below), whose sum is σ = 694542600. Its totient is φ = 670381440.

The previous prime is 682447313. The next prime is 682447333. The reversal of 682447321 is 123744286.

682447321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 8785296 + 673662025 = 2964^2 + 25955^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 682447321 - 2³ = 682447313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (682447021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42435 + ... + 56263.

It is an arithmetic number, because the mean of its divisors is an integer number (86817825).

Almost surely, 2^682447321 is an apocalyptic number.

682447321 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

682447321 is a deficient number, since it is larger than the sum of its proper divisors (12095279).

682447321 is a wasteful number, since it uses less digits than its factorization.

682447321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14699.

The product of its digits is 64512, while the sum is 37.

The square root of 682447321 is about 26123.6927137034. The cubic root of 682447321 is about 880.4196178019.

It can be divided in two parts, 6824 and 47321, that added together give a palindrome (54145).

The spelling of 682447321 in words is "six hundred eighty-two million, four hundred forty-seven thousand, three hundred twenty-one".