6646798 has 4 divisors (see below), whose sum is σ = 9970200. Its totient is φ = 3323398.

The previous prime is 6646781. The next prime is 6646819. The reversal of 6646798 is 8976466.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8976466 = 2 ⋅4488233.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1661698 + ... + 1661701.

It is an arithmetic number, because the mean of its divisors is an integer number (2492550).

Almost surely, 2^6646798 is an apocalyptic number.

6646798 is a deficient number, since it is larger than the sum of its proper divisors (3323402).

6646798 is a wasteful number, since it uses less digits than its factorization.

6646798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3323401.

The product of its digits is 435456, while the sum is 46.

The square root of 6646798 is about 2578.1384757224. The cubic root of 6646798 is about 188.0200484127.

It can be divided in two parts, 66 and 46798, that added together give a palindrome (46864).

The spelling of 6646798 in words is "six million, six hundred forty-six thousand, seven hundred ninety-eight".