2664108687 has 4 divisors (see below), whose sum is σ = 3552144920. Its totient is φ = 1776072456.

The previous prime is 2664108599. The next prime is 2664108691. The reversal of 2664108687 is 7868014662.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2664108687 - 2⁸ = 2664108431 is a prime.

It is a super-2 number, since 2×2664108687² = 14194950192297727938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2664108697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 444018112 + ... + 444018117.

It is an arithmetic number, because the mean of its divisors is an integer number (888036230).

Almost surely, 2^2664108687 is an apocalyptic number.

2664108687 is a deficient number, since it is larger than the sum of its proper divisors (888036233).

2664108687 is an equidigital number, since it uses as much as digits as its factorization.

2664108687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888036232.

The product of its (nonzero) digits is 774144, while the sum is 48.

The square root of 2664108687 is about 51615.0044754430. The cubic root of 2664108687 is about 1386.2790058390.

The spelling of 2664108687 in words is "two billion, six hundred sixty-four million, one hundred eight thousand, six hundred eighty-seven".