2563923 has 8 divisors (see below), whose sum is σ = 3619728. Its totient is φ = 1608704.

The previous prime is 2563921. The next prime is 2563927. The reversal of 2563923 is 3293652.

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

It is a cyclic number.

It is not a de Polignac number, because 2563923 - 2¹ = 2563921 is a prime.

It is a super-2 number, since 2×2563923² = 13147402299858, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2563921) 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 7 ways as a sum of consecutive naturals, for example, 25086 + ... + 25187.

It is an arithmetic number, because the mean of its divisors is an integer number (452466).

2^2563923 is an apocalyptic number.

2563923 is a deficient number, since it is larger than the sum of its proper divisors (1055805).

2563923 is a wasteful number, since it uses less digits than its factorization.

2563923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50293.

The product of its digits is 9720, while the sum is 30.

The square root of 2563923 is about 1601.2254681962. The cubic root of 2563923 is about 136.8679175252.

It can be divided in two parts, 2563 and 923, that added together give a triangular number (3486 = T₈₃).

The spelling of 2563923 in words is "two million, five hundred sixty-three thousand, nine hundred twenty-three".