2064865787 has 2 divisors, whose sum is σ = 2064865788. Its totient is φ = 2064865786.

The previous prime is 2064865741. The next prime is 2064865811. The reversal of 2064865787 is 7875684602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2064865787 - 2⁶ = 2064865723 is a prime.

It is not a weakly prime, because it can be changed into another prime (2064865987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1032432893 + 1032432894.

It is an arithmetic number, because the mean of its divisors is an integer number (1032432894).

Almost surely, 2^2064865787 is an apocalyptic number.

2064865787 is a deficient number, since it is larger than the sum of its proper divisors (1).

2064865787 is an equidigital number, since it uses as much as digits as its factorization.

2064865787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4515840, while the sum is 53.

The square root of 2064865787 is about 45440.7943042372. The cubic root of 2064865787 is about 1273.3973531600.

The spelling of 2064865787 in words is "two billion, sixty-four million, eight hundred sixty-five thousand, seven hundred eighty-seven".