682639361 has 4 divisors (see below), whose sum is σ = 683023152. Its totient is φ = 682255572.

The previous prime is 682639339. The next prime is 682639411. The reversal of 682639361 is 163936286.

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 a de Polignac number, because none of the positive numbers 2^k-682639361 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (682638361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189215 + ... + 192788.

It is an arithmetic number, because the mean of its divisors is an integer number (170755788).

Almost surely, 2^682639361 is an apocalyptic number.

It is an amenable number.

682639361 is a deficient number, since it is larger than the sum of its proper divisors (383791).

682639361 is a wasteful number, since it uses less digits than its factorization.

682639361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383790.

The product of its digits is 279936, while the sum is 44.

The square root of 682639361 is about 26127.3680457868. The cubic root of 682639361 is about 880.5021931262.

The spelling of 682639361 in words is "six hundred eighty-two million, six hundred thirty-nine thousand, three hundred sixty-one".