4540643 has 4 divisors (see below), whose sum is σ = 4564608. Its totient is φ = 4516680.

The previous prime is 4540633. The next prime is 4540651. The reversal of 4540643 is 3460454.

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 4540643 - 2⁶ = 4540579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4540633) 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, 11696 + ... + 12077.

It is an arithmetic number, because the mean of its divisors is an integer number (1141152).

Almost surely, 2^4540643 is an apocalyptic number.

4540643 is a deficient number, since it is larger than the sum of its proper divisors (23965).

4540643 is a wasteful number, since it uses less digits than its factorization.

4540643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23964.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 4540643 is about 2130.8784573504. The cubic root of 4540643 is about 165.5919114154.

The spelling of 4540643 in words is "four million, five hundred forty thousand, six hundred forty-three".