6537663 has 12 divisors (see below), whose sum is σ = 10301928. Its totient is φ = 3962160.

The previous prime is 6537649. The next prime is 6537667. The reversal of 6537663 is 3667356.

It is not a de Polignac number, because 6537663 - 2⁶ = 6537599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6537667) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32920 + ... + 33117.

It is an arithmetic number, because the mean of its divisors is an integer number (858494).

Almost surely, 2^6537663 is an apocalyptic number.

6537663 is a deficient number, since it is larger than the sum of its proper divisors (3764265).

6537663 is a wasteful number, since it uses less digits than its factorization.

6537663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66054 (or 66051 counting only the distinct ones).

The product of its digits is 68040, while the sum is 36.

The square root of 6537663 is about 2556.8854100253. The cubic root of 6537663 is about 186.9853191788.

The spelling of 6537663 in words is "six million, five hundred thirty-seven thousand, six hundred sixty-three".