2064240639 has 32 divisors (see below), whose sum is σ = 3210831360. Its totient is φ = 1308187584.

The previous prime is 2064240631. The next prime is 2064240643. The reversal of 2064240639 is 9360424602.

2064240639 is a `hidden beast` number, since 2 + 0 + 642 + 4 + 0 + 6 + 3 + 9 = 666.

It is not a de Polignac number, because 2064240639 - 2³ = 2064240631 is a prime.

It is a super-2 number, since 2×2064240639² = 8522178831398256642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2064240631) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91027 + ... + 111419.

It is an arithmetic number, because the mean of its divisors is an integer number (100338480).

Almost surely, 2^2064240639 is an apocalyptic number.

2064240639 is a deficient number, since it is larger than the sum of its proper divisors (1146590721).

2064240639 is a wasteful number, since it uses less digits than its factorization.

2064240639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20588 (or 20582 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 2064240639 is about 45433.9150745344. The cubic root of 2064240639 is about 1273.2688311411.

The spelling of 2064240639 in words is "two billion, sixty-four million, two hundred forty thousand, six hundred thirty-nine".