683885690 has 16 divisors (see below), whose sum is σ = 1303405992. Its totient is φ = 257462784.

The previous prime is 683885651. The next prime is 683885693. The reversal of 683885690 is 96588386.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 613107121 + 70778569 = 24761^2 + 8413^2 .

It is a super-2 number, since 2×683885690² = 935399273973552200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (683885693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2011259 + ... + 2011598.

Almost surely, 2^683885690 is an apocalyptic number.

683885690 is a deficient number, since it is larger than the sum of its proper divisors (619520302).

683885690 is a wasteful number, since it uses less digits than its factorization.

683885690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4022881.

The product of its (nonzero) digits is 2488320, while the sum is 53.

The square root of 683885690 is about 26151.2081938866. The cubic root of 683885690 is about 881.0377263816.

The spelling of 683885690 in words is "six hundred eighty-three million, eight hundred eighty-five thousand, six hundred ninety".