64799143 has 2 divisors, whose sum is σ = 64799144. Its totient is φ = 64799142.

The previous prime is 64799131. The next prime is 64799153. The reversal of 64799143 is 34199746.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64799143 - 2²⁵ = 31244711 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64799143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64799113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32399571 + 32399572.

It is an arithmetic number, because the mean of its divisors is an integer number (32399572).

Almost surely, 2^64799143 is an apocalyptic number.

64799143 is a deficient number, since it is larger than the sum of its proper divisors (1).

64799143 is an equidigital number, since it uses as much as digits as its factorization.

64799143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 43.

The square root of 64799143 is about 8049.7914879828. The cubic root of 64799143 is about 401.6579993500.

The spelling of 64799143 in words is "sixty-four million, seven hundred ninety-nine thousand, one hundred forty-three".