2859623 has 4 divisors (see below), whose sum is σ = 3079608. Its totient is φ = 2639640.

The previous prime is 2859617. The next prime is 2859631. The reversal of 2859623 is 3269582.

2859623 is nontrivially palindromic in base 12.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3269582 = 2 ⋅1634791.

It is a cyclic number.

It is not a de Polignac number, because 2859623 - 2⁴ = 2859607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2859673) 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, 109973 + ... + 109998.

It is an arithmetic number, because the mean of its divisors is an integer number (769902).

2^2859623 is an apocalyptic number.

2859623 is a deficient number, since it is larger than the sum of its proper divisors (219985).

2859623 is a wasteful number, since it uses less digits than its factorization.

2859623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219984.

The product of its digits is 25920, while the sum is 35.

The square root of 2859623 is about 1691.0419864687. The cubic root of 2859623 is about 141.9393876076.

The spelling of 2859623 in words is "two million, eight hundred fifty-nine thousand, six hundred twenty-three".