683456387 has 2 divisors, whose sum is σ = 683456388. Its totient is φ = 683456386.

The previous prime is 683456377. The next prime is 683456407. The reversal of 683456387 is 783654386.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 683456387 - 2²² = 679262083 is a prime.

It is a super-3 number, since 3×683456387³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (683456357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 341728193 + 341728194.

It is an arithmetic number, because the mean of its divisors is an integer number (341728194).

Almost surely, 2^683456387 is an apocalyptic number.

683456387 is a deficient number, since it is larger than the sum of its proper divisors (1).

683456387 is an equidigital number, since it uses as much as digits as its factorization.

683456387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 50.

The square root of 683456387 is about 26142.9988142141. The cubic root of 683456387 is about 880.8533333287.

The spelling of 683456387 in words is "six hundred eighty-three million, four hundred fifty-six thousand, three hundred eighty-seven".