6345643 has 4 divisors (see below), whose sum is σ = 6411160. Its totient is φ = 6280128.

The previous prime is 6345629. The next prime is 6345659. The reversal of 6345643 is 3465436.

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 6345643 - 2¹³ = 6337451 is a prime.

It is a d-powerful number, because it can be written as 6⁶ + 3⁹ + 4⁸ + 5⁹ + 6⁶ + 4¹¹ + 3⁹ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6345673) 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, 32613 + ... + 32806.

It is an arithmetic number, because the mean of its divisors is an integer number (1602790).

Almost surely, 2^6345643 is an apocalyptic number.

6345643 is a deficient number, since it is larger than the sum of its proper divisors (65517).

6345643 is an equidigital number, since it uses as much as digits as its factorization.

6345643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65516.

The product of its digits is 25920, while the sum is 31.

The square root of 6345643 is about 2519.0559739712. The cubic root of 6345643 is about 185.1364272470.

The spelling of 6345643 in words is "six million, three hundred forty-five thousand, six hundred forty-three".