6642398 has 16 divisors (see below), whose sum is σ = 11421024. Its totient is φ = 2838240.

The previous prime is 6642379. The next prime is 6642403. The reversal of 6642398 is 8932466.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7136 + ... + 8012.

It is an arithmetic number, because the mean of its divisors is an integer number (713814).

Almost surely, 2^6642398 is an apocalyptic number.

6642398 is a deficient number, since it is larger than the sum of its proper divisors (4778626).

6642398 is a wasteful number, since it uses less digits than its factorization.

6642398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1427.

The product of its digits is 62208, while the sum is 38.

The square root of 6642398 is about 2577.2850055824. The cubic root of 6642398 is about 187.9785511972.

The spelling of 6642398 in words is "six million, six hundred forty-two thousand, three hundred ninety-eight".