683428261 has 2 divisors, whose sum is σ = 683428262. Its totient is φ = 683428260.

The previous prime is 683428259. The next prime is 683428313. The reversal of 683428261 is 162824386.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 342472036 + 340956225 = 18506^2 + 18465^2 .

It is a cyclic number.

It is not a de Polignac number, because 683428261 - 2¹ = 683428259 is a prime.

Together with 683428259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (683428231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 341714130 + 341714131.

It is an arithmetic number, because the mean of its divisors is an integer number (341714131).

Almost surely, 2^683428261 is an apocalyptic number.

It is an amenable number.

683428261 is a deficient number, since it is larger than the sum of its proper divisors (1).

683428261 is an equidigital number, since it uses as much as digits as its factorization.

683428261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 110592, while the sum is 40.

The square root of 683428261 is about 26142.4608826331. The cubic root of 683428261 is about 880.8412500312.

The spelling of 683428261 in words is "six hundred eighty-three million, four hundred twenty-eight thousand, two hundred sixty-one".