6646898 has 8 divisors (see below), whose sum is σ = 10556892. Its totient is φ = 3127936.

The previous prime is 6646891. The next prime is 6646907. The reversal of 6646898 is 8986466.

It can be written as a sum of positive squares in 2 ways, for example, as 6620329 + 26569 = 2573^2 + 163^2 .

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

It is a super-3 number, since 3×6646898³ (a number of 21 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (6646891) 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, 97715 + ... + 97782.

Almost surely, 2^6646898 is an apocalyptic number.

6646898 is a deficient number, since it is larger than the sum of its proper divisors (3909994).

6646898 is a wasteful number, since it uses less digits than its factorization.

6646898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195516.

The product of its digits is 497664, while the sum is 47.

The square root of 6646898 is about 2578.1578694874. The cubic root of 6646898 is about 188.0209913184.

It can be divided in two parts, 66468 and 98, that added together give a palindrome (66566).

The spelling of 6646898 in words is "six million, six hundred forty-six thousand, eight hundred ninety-eight".