643067053 has 2 divisors, whose sum is σ = 643067054. Its totient is φ = 643067052.

The previous prime is 643066999. The next prime is 643067059. The reversal of 643067053 is 350760346.

643067053 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 607031044 + 36036009 = 24638^2 + 6003^2 .

It is a cyclic number.

It is not a de Polignac number, because 643067053 - 2¹³ = 643058861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (643067059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 321533526 + 321533527.

It is an arithmetic number, because the mean of its divisors is an integer number (321533527).

Almost surely, 2^643067053 is an apocalyptic number.

It is an amenable number.

643067053 is a deficient number, since it is larger than the sum of its proper divisors (1).

643067053 is an equidigital number, since it uses as much as digits as its factorization.

643067053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 34.

The square root of 643067053 is about 25358.7667878389. The cubic root of 643067053 is about 863.1483005946.

The spelling of 643067053 in words is "six hundred forty-three million, sixty-seven thousand, fifty-three".