6543898 has 8 divisors (see below), whose sum is σ = 9873108. Its totient is φ = 3252864.

The previous prime is 6543893. The next prime is 6543907. The reversal of 6543898 is 8983456.

It can be written as a sum of positive squares in 2 ways, for example, as 4782969 + 1760929 = 2187^2 + 1327^2 .

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

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (6543893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9111 + ... + 9802.

Almost surely, 2^6543898 is an apocalyptic number.

6543898 is a deficient number, since it is larger than the sum of its proper divisors (3329210).

6543898 is a wasteful number, since it uses less digits than its factorization.

6543898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19088.

The product of its digits is 207360, while the sum is 43.

The square root of 6543898 is about 2558.1043762912. The cubic root of 6543898 is about 187.0447432184.

It can be divided in two parts, 65438 and 98, that added together give a 16-th power (65536 = 2¹⁶).

The spelling of 6543898 in words is "six million, five hundred forty-three thousand, eight hundred ninety-eight".