7426643 has 4 divisors (see below), whose sum is σ = 8487600. Its totient is φ = 6365688.

The previous prime is 7426621. The next prime is 7426649. The reversal of 7426643 is 3466247.

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

It is not a de Polignac number, because 7426643 - 2¹⁴ = 7410259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7426649) 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, 530468 + ... + 530481.

It is an arithmetic number, because the mean of its divisors is an integer number (2121900).

Almost surely, 2^7426643 is an apocalyptic number.

7426643 is a deficient number, since it is larger than the sum of its proper divisors (1060957).

7426643 is a wasteful number, since it uses less digits than its factorization.

7426643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060956.

The product of its digits is 24192, while the sum is 32.

The square root of 7426643 is about 2725.1867825894. The cubic root of 7426643 is about 195.1031056752.

The spelling of 7426643 in words is "seven million, four hundred twenty-six thousand, six hundred forty-three".