682608391 has 8 divisors (see below), whose sum is σ = 689714064. Its totient is φ = 675533760.

The previous prime is 682608389. The next prime is 682608419. The reversal of 682608391 is 193806286.

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 682608391 - 2¹ = 682608389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (682608341) 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, 37821 + ... + 52873.

It is an arithmetic number, because the mean of its divisors is an integer number (86214258).

Almost surely, 2^682608391 is an apocalyptic number.

682608391 is a deficient number, since it is larger than the sum of its proper divisors (7105673).

682608391 is a wasteful number, since it uses less digits than its factorization.

682608391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15521.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 682608391 is about 26126.7753655134. The cubic root of 682608391 is about 880.4888773762.

The spelling of 682608391 in words is "six hundred eighty-two million, six hundred eight thousand, three hundred ninety-one".