6498421 has 4 divisors (see below), whose sum is σ = 6674092. Its totient is φ = 6322752.

The previous prime is 6498419. The next prime is 6498473. The reversal of 6498421 is 1248946.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4157521 + 2340900 = 2039^2 + 1530^2 .

It is a cyclic number.

It is not a de Polignac number, because 6498421 - 2¹ = 6498419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6498491) 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, 87780 + ... + 87853.

It is an arithmetic number, because the mean of its divisors is an integer number (1668523).

Almost surely, 2^6498421 is an apocalyptic number.

It is an amenable number.

6498421 is a deficient number, since it is larger than the sum of its proper divisors (175671).

6498421 is a wasteful number, since it uses less digits than its factorization.

6498421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175670.

The product of its digits is 13824, while the sum is 34.

The square root of 6498421 is about 2549.2000706104. The cubic root of 6498421 is about 186.6104447321.

The spelling of 6498421 in words is "six million, four hundred ninety-eight thousand, four hundred twenty-one".