682168493 has 4 divisors (see below), whose sum is σ = 687076320. Its totient is φ = 677260668.

The previous prime is 682168439. The next prime is 682168499. The reversal of 682168493 is 394861286.

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 682168493 - 2¹⁴ = 682152109 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 (682168499) 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, 2453705 + ... + 2453982.

It is an arithmetic number, because the mean of its divisors is an integer number (171769080).

Almost surely, 2^682168493 is an apocalyptic number.

It is an amenable number.

682168493 is a deficient number, since it is larger than the sum of its proper divisors (4907827).

682168493 is a wasteful number, since it uses less digits than its factorization.

682168493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4907826.

The product of its digits is 497664, while the sum is 47.

The square root of 682168493 is about 26118.3554803896. The cubic root of 682168493 is about 880.2996969064.

The spelling of 682168493 in words is "six hundred eighty-two million, one hundred sixty-eight thousand, four hundred ninety-three".