683706566 has 4 divisors (see below), whose sum is σ = 1025559852. Its totient is φ = 341853282.

The previous prime is 683706559. The next prime is 683706571. The reversal of 683706566 is 665607386.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 683706566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170926640 + ... + 170926643.

It is an arithmetic number, because the mean of its divisors is an integer number (256389963).

Almost surely, 2^683706566 is an apocalyptic number.

683706566 is a deficient number, since it is larger than the sum of its proper divisors (341853286).

683706566 is a wasteful number, since it uses less digits than its factorization.

683706566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341853285.

The product of its (nonzero) digits is 1088640, while the sum is 47.

The square root of 683706566 is about 26147.7831947567. The cubic root of 683706566 is about 880.9607989144.

The spelling of 683706566 in words is "six hundred eighty-three million, seven hundred six thousand, five hundred sixty-six".