683686641 has 16 divisors (see below), whose sum is σ = 994915008. Its totient is φ = 414163200.

The previous prime is 683686639. The next prime is 683686643. The reversal of 683686641 is 146686386.

It is an interprime number because it is at equal distance from previous prime (683686639) and next prime (683686643).

It is not a de Polignac number, because 683686641 - 2¹ = 683686639 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (683686643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104301 + ... + 110661.

It is an arithmetic number, because the mean of its divisors is an integer number (62182188).

Almost surely, 2^683686641 is an apocalyptic number.

It is an amenable number.

683686641 is a deficient number, since it is larger than the sum of its proper divisors (311228367).

683686641 is a wasteful number, since it uses less digits than its factorization.

683686641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9632.

The product of its digits is 995328, while the sum is 48.

The square root of 683686641 is about 26147.4021845383. The cubic root of 683686641 is about 880.9522409962.

The spelling of 683686641 in words is "six hundred eighty-three million, six hundred eighty-six thousand, six hundred forty-one".