683648144 has 20 divisors (see below), whose sum is σ = 1325042796. Its totient is φ = 341701632.

The previous prime is 683648131. The next prime is 683648153. The reversal of 683648144 is 441846386.

It can be written as a sum of positive squares in 2 ways, for example, as 226201600 + 457446544 = 15040^2 + 21388^2 .

It is a junction number, because it is equal to n+sod(n) for n = 683648095 and 683648104.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52952 + ... + 64584.

Almost surely, 2^683648144 is an apocalyptic number.

It is an amenable number.

683648144 is a deficient number, since it is larger than the sum of its proper divisors (641394652).

683648144 is a wasteful number, since it uses less digits than its factorization.

683648144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15314 (or 15308 counting only the distinct ones).

The product of its digits is 442368, while the sum is 44.

The square root of 683648144 is about 26146.6660207377. Note that the first 3 decimals coincide. The cubic root of 683648144 is about 880.9357058114.

The spelling of 683648144 in words is "six hundred eighty-three million, six hundred forty-eight thousand, one hundred forty-four".