6646498 has 4 divisors (see below), whose sum is σ = 9969750. Its totient is φ = 3323248.

The previous prime is 6646477. The next prime is 6646511. The reversal of 6646498 is 8946466.

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

It can be written as a sum of positive squares in only one way, i.e., 5841889 + 804609 = 2417^2 + 897^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1661623 + ... + 1661626.

Almost surely, 2^6646498 is an apocalyptic number.

6646498 is a deficient number, since it is larger than the sum of its proper divisors (3323252).

6646498 is a wasteful number, since it uses less digits than its factorization.

6646498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3323251.

The product of its digits is 248832, while the sum is 43.

The square root of 6646498 is about 2578.0802935518. The cubic root of 6646498 is about 188.0172196390.

Subtracting 6646498 from its reverse (8946466), we obtain a cube (2299968 = 132³).

It can be divided in two parts, 66 and 46498, that added together give a palindrome (46564).

The spelling of 6646498 in words is "six million, six hundred forty-six thousand, four hundred ninety-eight".