2065844664 has 48 divisors (see below), whose sum is σ = 6025383000. Its totient is φ = 635644224.

The previous prime is 2065844639. The next prime is 2065844689. The reversal of 2065844664 is 4664485602.

2065844664 is a `hidden beast` number, since 2 + 0 + 6 + 584 + 4 + 6 + 64 = 666.

It is an interprime number because it is at equal distance from previous prime (2065844639) and next prime (2065844689).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1102614 + ... + 1104485.

Almost surely, 2^2065844664 is an apocalyptic number.

2065844664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2065844664 is an abundant number, since it is smaller than the sum of its proper divisors (3959538336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2065844664 is a wasteful number, since it uses less digits than its factorization.

2065844664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2207124 (or 2207117 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 45.

The square root of 2065844664 is about 45451.5639334886. The cubic root of 2065844664 is about 1273.5985450030.

The spelling of 2065844664 in words is "two billion, sixty-five million, eight hundred forty-four thousand, six hundred sixty-four".