2665279617 has 64 divisors (see below), whose sum is σ = 4781844480. Its totient is φ = 1275264000.

The previous prime is 2665279577. The next prime is 2665279637. The reversal of 2665279617 is 7169725662.

2665279617 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2665279617 - 2¹⁰ = 2665278593 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2665279617.

It is not an unprimeable number, because it can be changed into a prime (2665279637) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2218617 + ... + 2219817.

It is an arithmetic number, because the mean of its divisors is an integer number (74716320).

Almost surely, 2^2665279617 is an apocalyptic number.

It is an amenable number.

2665279617 is a deficient number, since it is larger than the sum of its proper divisors (2116564863).

2665279617 is a wasteful number, since it uses less digits than its factorization.

2665279617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1974.

The product of its digits is 1905120, while the sum is 51.

The square root of 2665279617 is about 51626.3461519407. The cubic root of 2665279617 is about 1386.4820753718.

It can be divided in two parts, 2665 and 279617, that added together give a palindrome (282282).

The spelling of 2665279617 in words is "two billion, six hundred sixty-five million, two hundred seventy-nine thousand, six hundred seventeen".