2574643 has 12 divisors (see below), whose sum is σ = 2795968. Its totient is φ = 2368080.

The previous prime is 2574623. The next prime is 2574653. The reversal of 2574643 is 3464752.

2574643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-2574643 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2574623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16321 + ... + 16477.

2^2574643 is an apocalyptic number.

2574643 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2574643 is a deficient number, since it is larger than the sum of its proper divisors (221325).

2574643 is a wasteful number, since it uses less digits than its factorization.

2574643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234 (or 211 counting only the distinct ones).

The product of its digits is 20160, while the sum is 31.

The square root of 2574643 is about 1604.5694126463. The cubic root of 2574643 is about 137.0584047779.

It can be divided in two parts, 257 and 4643, that added together give a square (4900 = 70²).

The spelling of 2574643 in words is "two million, five hundred seventy-four thousand, six hundred forty-three".