2627688091 has 4 divisors (see below), whose sum is σ = 3003072112. Its totient is φ = 2252304072.

The previous prime is 2627688067. The next prime is 2627688097. The reversal of 2627688091 is 1908867262.

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

It is a cyclic number.

It is not a de Polignac number, because 2627688091 - 2⁷ = 2627687963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2627688097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187692000 + ... + 187692013.

It is an arithmetic number, because the mean of its divisors is an integer number (750768028).

Almost surely, 2^2627688091 is an apocalyptic number.

2627688091 is a deficient number, since it is larger than the sum of its proper divisors (375384021).

2627688091 is an equidigital number, since it uses as much as digits as its factorization.

2627688091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375384020.

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 2627688091 is about 51260.9801993680. The cubic root of 2627688091 is about 1379.9327998853.

The spelling of 2627688091 in words is "two billion, six hundred twenty-seven million, six hundred eighty-eight thousand, ninety-one".