2631859 has 4 divisors (see below), whose sum is σ = 2687904. Its totient is φ = 2575816.

The previous prime is 2631851. The next prime is 2631887. The reversal of 2631859 is 9581362.

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

It is a cyclic number.

It is not a de Polignac number, because 2631859 - 2³ = 2631851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2631851) 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, 27952 + ... + 28045.

It is an arithmetic number, because the mean of its divisors is an integer number (671976).

2^2631859 is an apocalyptic number.

2631859 is a deficient number, since it is larger than the sum of its proper divisors (56045).

2631859 is an equidigital number, since it uses as much as digits as its factorization.

2631859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56044.

The product of its digits is 12960, while the sum is 34.

The square root of 2631859 is about 1622.3005270294. The cubic root of 2631859 is about 138.0662532811.

The spelling of 2631859 in words is "two million, six hundred thirty-one thousand, eight hundred fifty-nine".