2064320643 has 32 divisors (see below), whose sum is σ = 3435466752. Its totient is φ = 1071165600.

The previous prime is 2064320579. The next prime is 2064320647. The reversal of 2064320643 is 3460234602.

It is a happy number.

It is not a de Polignac number, because 2064320643 - 2⁶ = 2064320579 is a prime.

It is a super-2 number, since 2×2064320643² = 8522839434231866898, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2064320643.

It is not an unprimeable number, because it can be changed into a prime (2064320647) 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 in 31 ways as a sum of consecutive naturals, for example, 222528 + ... + 231618.

It is an arithmetic number, because the mean of its divisors is an integer number (107358336).

Almost surely, 2^2064320643 is an apocalyptic number.

2064320643 is a deficient number, since it is larger than the sum of its proper divisors (1371146109).

2064320643 is a wasteful number, since it uses less digits than its factorization.

2064320643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10095.

The product of its (nonzero) digits is 20736, while the sum is 30.

The square root of 2064320643 is about 45434.7955096092. The cubic root of 2064320643 is about 1273.2852803350.

The spelling of 2064320643 in words is "two billion, sixty-four million, three hundred twenty thousand, six hundred forty-three".