683257394 has 4 divisors (see below), whose sum is σ = 1024886094. Its totient is φ = 341628696.

The previous prime is 683257349. The next prime is 683257409. The reversal of 683257394 is 493752386.

It is a happy number.

683257394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 546951769 + 136305625 = 23387^2 + 11675^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170814347 + ... + 170814350.

Almost surely, 2^683257394 is an apocalyptic number.

683257394 is a deficient number, since it is larger than the sum of its proper divisors (341628700).

683257394 is a wasteful number, since it uses less digits than its factorization.

683257394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341628699.

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

The square root of 683257394 is about 26139.1926807237. The cubic root of 683257394 is about 880.7678362070.

The spelling of 683257394 in words is "six hundred eighty-three million, two hundred fifty-seven thousand, three hundred ninety-four".