7541643 has 4 divisors (see below), whose sum is σ = 10055528. Its totient is φ = 5027760.

The previous prime is 7541627. The next prime is 7541647. The reversal of 7541643 is 3461457.

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

It is not a de Polignac number, because 7541643 - 2⁴ = 7541627 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7541643.

It is not an unprimeable number, because it can be changed into a prime (7541647) 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, 1256938 + ... + 1256943.

It is an arithmetic number, because the mean of its divisors is an integer number (2513882).

Almost surely, 2^7541643 is an apocalyptic number.

7541643 is a deficient number, since it is larger than the sum of its proper divisors (2513885).

7541643 is a wasteful number, since it uses less digits than its factorization.

7541643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2513884.

The product of its digits is 10080, while the sum is 30.

The square root of 7541643 is about 2746.2051999077. The cubic root of 7541643 is about 196.1049954594.

The spelling of 7541643 in words is "seven million, five hundred forty-one thousand, six hundred forty-three".