2691071 has 4 divisors (see below), whose sum is σ = 2718912. Its totient is φ = 2663232.

The previous prime is 2691067. The next prime is 2691097. The reversal of 2691071 is 1701962.

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

It is not a de Polignac number, because 2691071 - 2² = 2691067 is a prime.

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 2691071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2691001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13775 + ... + 13968.

It is an arithmetic number, because the mean of its divisors is an integer number (679728).

2^2691071 is an apocalyptic number.

2691071 is a deficient number, since it is larger than the sum of its proper divisors (27841).

2691071 is an equidigital number, since it uses as much as digits as its factorization.

2691071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27840.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 2691071 is about 1640.4484143063. The cubic root of 2691071 is about 139.0939964260.

The spelling of 2691071 in words is "two million, six hundred ninety-one thousand, seventy-one".