6453643 has 6 divisors (see below), whose sum is σ = 7507356. Its totient is φ = 5531652.

The previous prime is 6453571. The next prime is 6453647. The reversal of 6453643 is 3463546.

It is not a de Polignac number, because 6453643 - 2⁹ = 6453131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6453647) 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, 65805 + ... + 65902.

It is an arithmetic number, because the mean of its divisors is an integer number (1251226).

Almost surely, 2^6453643 is an apocalyptic number.

6453643 is a deficient number, since it is larger than the sum of its proper divisors (1053713).

6453643 is a wasteful number, since it uses less digits than its factorization.

6453643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131721 (or 131714 counting only the distinct ones).

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

The square root of 6453643 is about 2540.4021335214. The cubic root of 6453643 is about 186.1808373443.

The spelling of 6453643 in words is "six million, four hundred fifty-three thousand, six hundred forty-three".