682999645 has 4 divisors (see below), whose sum is σ = 819599580. Its totient is φ = 546399712.

The previous prime is 682999637. The next prime is 682999661. The reversal of 682999645 is 546999286.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 248819076 + 434180569 = 15774^2 + 20837^2 .

It is a cyclic number.

It is not a de Polignac number, because 682999645 - 2³ = 682999637 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 682999645.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68299960 + ... + 68299969.

It is an arithmetic number, because the mean of its divisors is an integer number (204899895).

Almost surely, 2^682999645 is an apocalyptic number.

It is an amenable number.

682999645 is a deficient number, since it is larger than the sum of its proper divisors (136599935).

682999645 is a wasteful number, since it uses less digits than its factorization.

682999645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136599934.

The product of its digits is 8398080, while the sum is 58.

The square root of 682999645 is about 26134.2618988943. The cubic root of 682999645 is about 880.6570699554.

The spelling of 682999645 in words is "six hundred eighty-two million, nine hundred ninety-nine thousand, six hundred forty-five".