2726660891 has 8 divisors (see below), whose sum is σ = 2737937664. Its totient is φ = 2715408360.

The previous prime is 2726660851. The next prime is 2726660927. The reversal of 2726660891 is 1980666272.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2726660891 - 2¹⁴ = 2726644507 is a prime.

It is a super-2 number, since 2×2726660891² = 14869359229017827762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2726660851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239396 + ... + 250526.

It is an arithmetic number, because the mean of its divisors is an integer number (342242208).

Almost surely, 2^2726660891 is an apocalyptic number.

2726660891 is a deficient number, since it is larger than the sum of its proper divisors (11276773).

2726660891 is a wasteful number, since it uses less digits than its factorization.

2726660891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12121.

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

The square root of 2726660891 is about 52217.4385718028. The cubic root of 2726660891 is about 1397.0449389087.

The spelling of 2726660891 in words is "two billion, seven hundred twenty-six million, six hundred sixty thousand, eight hundred ninety-one".