2872681 has 4 divisors (see below), whose sum is σ = 3283072. Its totient is φ = 2462292.

The previous prime is 2872669. The next prime is 2872691. The reversal of 2872681 is 1862782.

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 not a de Polignac number, because 2872681 - 2¹⁵ = 2839913 is a prime.

It is a super-2 number, since 2×2872681² = 16504592255522, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (2872601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205185 + ... + 205198.

It is an arithmetic number, because the mean of its divisors is an integer number (820768).

2^2872681 is an apocalyptic number.

It is an amenable number.

2872681 is a deficient number, since it is larger than the sum of its proper divisors (410391).

2872681 is an equidigital number, since it uses as much as digits as its factorization.

2872681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410390.

The product of its digits is 10752, while the sum is 34.

The square root of 2872681 is about 1694.8985220361. The cubic root of 2872681 is about 142.1551072448.

It can be divided in two parts, 2872 and 681, that added together give a palindrome (3553).

The spelling of 2872681 in words is "two million, eight hundred seventy-two thousand, six hundred eighty-one".