682815813 has 8 divisors (see below), whose sum is σ = 911232000. Its totient is φ = 454805088.

The previous prime is 682815811. The next prime is 682815821. The reversal of 682815813 is 318518286.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 682815813 - 2¹ = 682815811 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (682815811) 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, 97413 + ... + 104186.

It is an arithmetic number, because the mean of its divisors is an integer number (113904000).

Almost surely, 2^682815813 is an apocalyptic number.

It is an amenable number.

682815813 is a deficient number, since it is larger than the sum of its proper divisors (228416187).

682815813 is a wasteful number, since it uses less digits than its factorization.

682815813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202731.

The product of its digits is 92160, while the sum is 42.

The square root of 682815813 is about 26130.7445932947. The cubic root of 682815813 is about 880.5780521118.

The spelling of 682815813 in words is "six hundred eighty-two million, eight hundred fifteen thousand, eight hundred thirteen".