2667864261 has 4 divisors (see below), whose sum is σ = 3557152352. Its totient is φ = 1778576172.

The previous prime is 2667864239. The next prime is 2667864289. The reversal of 2667864261 is 1624687662.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2667864261 - 2⁵ = 2667864229 is a prime.

It is a super-2 number, since 2×2667864261² = 14234999430242152242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2667864261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2667864211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 444644041 + ... + 444644046.

It is an arithmetic number, because the mean of its divisors is an integer number (889288088).

Almost surely, 2^2667864261 is an apocalyptic number.

It is an amenable number.

2667864261 is a deficient number, since it is larger than the sum of its proper divisors (889288091).

2667864261 is an equidigital number, since it uses as much as digits as its factorization.

2667864261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889288090.

The product of its digits is 1161216, while the sum is 48.

The square root of 2667864261 is about 51651.3723050995. The cubic root of 2667864261 is about 1386.9301090160.

The spelling of 2667864261 in words is "two billion, six hundred sixty-seven million, eight hundred sixty-four thousand, two hundred sixty-one".