683947105 has 4 divisors (see below), whose sum is σ = 820736532. Its totient is φ = 547157680.

The previous prime is 683947087. The next prime is 683947127. The reversal of 683947105 is 501749386.

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 185586129 + 498360976 = 13623^2 + 22324^2 .

It is a de Polignac number, because none of the positive numbers 2^k-683947105 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68394706 + ... + 68394715.

It is an arithmetic number, because the mean of its divisors is an integer number (205184133).

Almost surely, 2^683947105 is an apocalyptic number.

It is an amenable number.

683947105 is a deficient number, since it is larger than the sum of its proper divisors (136789427).

683947105 is a wasteful number, since it uses less digits than its factorization.

683947105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136789426.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 683947105 is about 26152.3823962560. The cubic root of 683947105 is about 881.0640988749.

The spelling of 683947105 in words is "six hundred eighty-three million, nine hundred forty-seven thousand, one hundred five".