2691267680 has 48 divisors (see below), whose sum is σ = 6361241040. Its totient is φ = 1075978752.

The previous prime is 2691267659. The next prime is 2691267721. The reversal of 2691267680 is 867621962.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 583142 + ... + 587738.

It is an arithmetic number, because the mean of its divisors is an integer number (132525855).

Almost surely, 2^2691267680 is an apocalyptic number.

2691267680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2691267680 is an abundant number, since it is smaller than the sum of its proper divisors (3669973360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2691267680 is a wasteful number, since it uses less digits than its factorization.

2691267680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8271 (or 8263 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 2691267680 is about 51877.4293888971. The cubic root of 2691267680 is about 1390.9738495798.

The spelling of 2691267680 in words is "two billion, six hundred ninety-one million, two hundred sixty-seven thousand, six hundred eighty".