2626881 has 4 divisors (see below), whose sum is σ = 3502512. Its totient is φ = 1751252.

The previous prime is 2626879. The next prime is 2626901. The reversal of 2626881 is 1886262.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2626881 - 2¹ = 2626879 is a prime.

It is a super-2 number, since 2×2626881² = 13801007576322, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is a Curzon number.

2626881 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2626801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 437811 + ... + 437816.

It is an arithmetic number, because the mean of its divisors is an integer number (875628).

2^2626881 is an apocalyptic number.

It is an amenable number.

2626881 is a deficient number, since it is larger than the sum of its proper divisors (875631).

2626881 is an equidigital number, since it uses as much as digits as its factorization.

2626881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875630.

The product of its digits is 9216, while the sum is 33.

The square root of 2626881 is about 1620.7655598513. The cubic root of 2626881 is about 137.9791503893.

The spelling of 2626881 in words is "two million, six hundred twenty-six thousand, eight hundred eighty-one".