2620765885 has 16 divisors (see below), whose sum is σ = 3279854592. Its totient is φ = 2008051200.

The previous prime is 2620765871. The next prime is 2620765891. The reversal of 2620765885 is 5885670262.

It is not a de Polignac number, because 2620765885 - 2⁵ = 2620765853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 72121 + ... + 102190.

It is an arithmetic number, because the mean of its divisors is an integer number (204990912).

Almost surely, 2^2620765885 is an apocalyptic number.

It is an amenable number.

2620765885 is a deficient number, since it is larger than the sum of its proper divisors (659088707).

2620765885 is a wasteful number, since it uses less digits than its factorization.

2620765885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174444.

The product of its (nonzero) digits is 1612800, while the sum is 49.

The square root of 2620765885 is about 51193.4164224268. The cubic root of 2620765885 is about 1378.7200000212.

The spelling of 2620765885 in words is "two billion, six hundred twenty million, seven hundred sixty-five thousand, eight hundred eighty-five".