2064780287 has 4 divisors (see below), whose sum is σ = 2067693240. Its totient is φ = 2061867336.

The previous prime is 2064780281. The next prime is 2064780299. The reversal of 2064780287 is 7820874602.

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 2064780287 - 2⁸ = 2064780031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2064780281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1455413 + ... + 1456830.

It is an arithmetic number, because the mean of its divisors is an integer number (516923310).

Almost surely, 2^2064780287 is an apocalyptic number.

2064780287 is a deficient number, since it is larger than the sum of its proper divisors (2912953).

2064780287 is an equidigital number, since it uses as much as digits as its factorization.

2064780287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2912952.

The product of its (nonzero) digits is 301056, while the sum is 44.

The square root of 2064780287 is about 45439.8535098871. The cubic root of 2064780287 is about 1273.3797770416.

The spelling of 2064780287 in words is "two billion, sixty-four million, seven hundred eighty thousand, two hundred eighty-seven".