2698891 has 16 divisors (see below), whose sum is σ = 3098368. Its totient is φ = 2332800.

The previous prime is 2698867. The next prime is 2698921. The reversal of 2698891 is 1988962.

It is a happy number.

2698891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a 7-Lehmer number, since φ(2698891) divides (2698891-1)⁷.

It is a cyclic number.

It is not a de Polignac number, because 2698891 - 2¹¹ = 2696843 is a prime.

2698891 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2698841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14821 + ... + 15001.

It is an arithmetic number, because the mean of its divisors is an integer number (193648).

2^2698891 is an apocalyptic number.

2698891 is a deficient number, since it is larger than the sum of its proper divisors (399477).

2698891 is a wasteful number, since it uses less digits than its factorization.

2698891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262.

The product of its digits is 62208, while the sum is 43.

The square root of 2698891 is about 1642.8301799030. The cubic root of 2698891 is about 139.2285975012.

The spelling of 2698891 in words is "two million, six hundred ninety-eight thousand, eight hundred ninety-one".