682401 has 4 divisors (see below), whose sum is σ = 909872. Its totient is φ = 454932.

The previous prime is 682373. The next prime is 682411. The reversal of 682401 is 104286.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 682401 - 2⁶ = 682337 is a prime.

It is a super-2 number, since 2×682401² = 931342249602, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (682411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113731 + ... + 113736.

It is an arithmetic number, because the mean of its divisors is an integer number (227468).

2⁶⁸²⁴⁰¹ is an apocalyptic number.

It is an amenable number.

682401 is a deficient number, since it is larger than the sum of its proper divisors (227471).

682401 is a wasteful number, since it uses less digits than its factorization.

682401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227470.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 682401 is about 826.0756623942. The cubic root of 682401 is about 88.0399697905.

Adding to 682401 its reverse (104286), we get a palindrome (786687).

The spelling of 682401 in words is "six hundred eighty-two thousand, four hundred one".