683121644 has 6 divisors (see below), whose sum is σ = 1195462884. Its totient is φ = 341560820.

The previous prime is 683121631. The next prime is 683121653. The reversal of 683121644 is 446121386.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85390202 + ... + 85390209.

It is an arithmetic number, because the mean of its divisors is an integer number (199243814).

Almost surely, 2^683121644 is an apocalyptic number.

It is an amenable number.

683121644 is a deficient number, since it is larger than the sum of its proper divisors (512341240).

683121644 is a wasteful number, since it uses less digits than its factorization.

683121644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170780415 (or 170780413 counting only the distinct ones).

The product of its digits is 27648, while the sum is 35.

The square root of 683121644 is about 26136.5958762804. The cubic root of 683121644 is about 880.7095018447.

The spelling of 683121644 in words is "six hundred eighty-three million, one hundred twenty-one thousand, six hundred forty-four".