4657643 has 4 divisors (see below), whose sum is σ = 4931640. Its totient is φ = 4383648.

The previous prime is 4657621. The next prime is 4657687. The reversal of 4657643 is 3467564.

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 4657643 - 2⁶ = 4657579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4657613) 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, 136973 + ... + 137006.

It is an arithmetic number, because the mean of its divisors is an integer number (1232910).

Almost surely, 2^4657643 is an apocalyptic number.

4657643 is a deficient number, since it is larger than the sum of its proper divisors (273997).

4657643 is a wasteful number, since it uses less digits than its factorization.

4657643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273996.

The product of its digits is 60480, while the sum is 35.

The square root of 4657643 is about 2158.1573158600. The cubic root of 4657643 is about 167.0021513581.

The spelling of 4657643 in words is "four million, six hundred fifty-seven thousand, six hundred forty-three".