682661 has 4 divisors (see below), whose sum is σ = 780192. Its totient is φ = 585132.

The previous prime is 682657. The next prime is 682673. The reversal of 682661 is 166286.

682661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 682661 - 2² = 682657 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 682661.

It is not an unprimeable number, because it can be changed into a prime (682361) 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, 48755 + ... + 48768.

It is an arithmetic number, because the mean of its divisors is an integer number (195048).

2⁶⁸²⁶⁶¹ is an apocalyptic number.

It is an amenable number.

682661 is a deficient number, since it is larger than the sum of its proper divisors (97531).

682661 is an equidigital number, since it uses as much as digits as its factorization.

682661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97530.

The product of its digits is 3456, while the sum is 29.

The square root of 682661 is about 826.2330179798. The cubic root of 682661 is about 88.0511496714.

The spelling of 682661 in words is "six hundred eighty-two thousand, six hundred sixty-one".