643072483 has 2 divisors, whose sum is σ = 643072484. Its totient is φ = 643072482.

The previous prime is 643072421. The next prime is 643072487. The reversal of 643072483 is 384270346.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-643072483 is a prime.

It is not a weakly prime, because it can be changed into another prime (643072487) 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 as a sum of consecutive naturals, namely, 321536241 + 321536242.

It is an arithmetic number, because the mean of its divisors is an integer number (321536242).

Almost surely, 2^643072483 is an apocalyptic number.

643072483 is a deficient number, since it is larger than the sum of its proper divisors (1).

643072483 is an equidigital number, since it uses as much as digits as its factorization.

643072483 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 37.

The square root of 643072483 is about 25358.8738511788. The cubic root of 643072483 is about 863.1507300365.

The spelling of 643072483 in words is "six hundred forty-three million, seventy-two thousand, four hundred eighty-three".