2623891 has 8 divisors (see below), whose sum is σ = 2735280. Its totient is φ = 2513952.

The previous prime is 2623883. The next prime is 2623897. The reversal of 2623891 is 1983262.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2623891 - 2³ = 2623883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2623897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4756 + ... + 5278.

It is an arithmetic number, because the mean of its divisors is an integer number (341910).

2^2623891 is an apocalyptic number.

2623891 is a deficient number, since it is larger than the sum of its proper divisors (111389).

2623891 is a wasteful number, since it uses less digits than its factorization.

2623891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725.

The product of its digits is 5184, while the sum is 31.

The square root of 2623891 is about 1619.8428936165. The cubic root of 2623891 is about 137.9267797531.

The spelling of 2623891 in words is "two million, six hundred twenty-three thousand, eight hundred ninety-one".