6355643 has 6 divisors (see below), whose sum is σ = 7393356. Its totient is φ = 5447652.

The previous prime is 6355631. The next prime is 6355667. The reversal of 6355643 is 3465536.

It is not a de Polignac number, because 6355643 - 2¹⁰ = 6354619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6355673) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64805 + ... + 64902.

It is an arithmetic number, because the mean of its divisors is an integer number (1232226).

Almost surely, 2^6355643 is an apocalyptic number.

6355643 is a deficient number, since it is larger than the sum of its proper divisors (1037713).

6355643 is a wasteful number, since it uses less digits than its factorization.

6355643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129721 (or 129714 counting only the distinct ones).

The product of its digits is 32400, while the sum is 32.

The square root of 6355643 is about 2521.0400631485. The cubic root of 6355643 is about 185.2336274104.

The spelling of 6355643 in words is "six million, three hundred fifty-five thousand, six hundred forty-three".