2497643 has 4 divisors (see below), whose sum is σ = 2505840. Its totient is φ = 2489448.

The previous prime is 2497637. The next prime is 2497661. The reversal of 2497643 is 3467942.

2497643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2497643 - 2²⁰ = 1449067 is a prime.

It is a d-powerful number, because it can be written as 2¹⁵ + 4² + 9² + 7⁷ + 6⁶ + 4⁴ + 3¹³ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2497603) 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 3 ways as a sum of consecutive naturals, for example, 3623 + ... + 4256.

It is an arithmetic number, because the mean of its divisors is an integer number (626460).

2^2497643 is an apocalyptic number.

2497643 is a deficient number, since it is larger than the sum of its proper divisors (8197).

2497643 is an equidigital number, since it uses as much as digits as its factorization.

2497643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8196.

The product of its digits is 36288, while the sum is 35.

The square root of 2497643 is about 1580.3933054781. The cubic root of 2497643 is about 135.6782148696.

Subtracting 2497643 from its reverse (3467942), we obtain a cube (970299 = 99³).

It can be divided in two parts, 24 and 97643, that multiplied together give a palindrome (2343432).

The spelling of 2497643 in words is "two million, four hundred ninety-seven thousand, six hundred forty-three".