6537998 has 8 divisors (see below), whose sum is σ = 9872400. Its totient is φ = 3247200.

The previous prime is 6537991. The next prime is 6538001. The reversal of 6537998 is 8997356.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6537991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10523 + ... + 11126.

It is an arithmetic number, because the mean of its divisors is an integer number (1234050).

Almost surely, 2^6537998 is an apocalyptic number.

6537998 is a deficient number, since it is larger than the sum of its proper divisors (3334402).

6537998 is a wasteful number, since it uses less digits than its factorization.

6537998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21802.

The product of its digits is 408240, while the sum is 47.

The square root of 6537998 is about 2556.9509185747. The cubic root of 6537998 is about 186.9885129303.

The spelling of 6537998 in words is "six million, five hundred thirty-seven thousand, nine hundred ninety-eight".