683680997 has 4 divisors (see below), whose sum is σ = 685544256. Its totient is φ = 681817740.

The previous prime is 683680981. The next prime is 683681021. The reversal of 683680997 is 799086386.

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 683680997 - 2⁴ = 683680981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (683680897) by changing a digit.

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, 931079 + ... + 931812.

It is an arithmetic number, because the mean of its divisors is an integer number (171386064).

Almost surely, 2^683680997 is an apocalyptic number.

It is an amenable number.

683680997 is a deficient number, since it is larger than the sum of its proper divisors (1863259).

683680997 is a wasteful number, since it uses less digits than its factorization.

683680997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1863258.

The product of its (nonzero) digits is 3919104, while the sum is 56.

The square root of 683680997 is about 26147.2942577239. The cubic root of 683680997 is about 880.9498168310.

The spelling of 683680997 in words is "six hundred eighty-three million, six hundred eighty thousand, nine hundred ninety-seven".