2064660443 has 4 divisors (see below), whose sum is σ = 2065403520. Its totient is φ = 2063917368.

The previous prime is 2064660439. The next prime is 2064660457. The reversal of 2064660443 is 3440664602.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2064660443 - 2² = 2064660439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2064660943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367355 + ... + 372932.

It is an arithmetic number, because the mean of its divisors is an integer number (516350880).

Almost surely, 2^2064660443 is an apocalyptic number.

2064660443 is a deficient number, since it is larger than the sum of its proper divisors (743077).

2064660443 is an equidigital number, since it uses as much as digits as its factorization.

2064660443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743076.

The product of its (nonzero) digits is 82944, while the sum is 35.

The square root of 2064660443 is about 45438.5347805142. The cubic root of 2064660443 is about 1273.3551400573.

The spelling of 2064660443 in words is "two billion, sixty-four million, six hundred sixty thousand, four hundred forty-three".