6543845 has 32 divisors (see below), whose sum is σ = 10229760. Its totient is φ = 3896640.

The previous prime is 6543833. The next prime is 6543853. The reversal of 6543845 is 5483456.

It is not a de Polignac number, because 6543845 - 2⁶ = 6543781 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8486 + ... + 9224.

It is an arithmetic number, because the mean of its divisors is an integer number (319680).

Almost surely, 2^6543845 is an apocalyptic number.

It is an amenable number.

6543845 is a deficient number, since it is larger than the sum of its proper divisors (3685915).

6543845 is a wasteful number, since it uses less digits than its factorization.

6543845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785.

The product of its digits is 57600, while the sum is 35.

The square root of 6543845 is about 2558.0940170369. The cubic root of 6543845 is about 187.0442382493.

The spelling of 6543845 in words is "six million, five hundred forty-three thousand, eight hundred forty-five".