6651466 has 4 divisors (see below), whose sum is σ = 9977202. Its totient is φ = 3325732.

The previous prime is 6651457. The next prime is 6651467. The reversal of 6651466 is 6641566.

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., 6651241 + 225 = 2579^2 + 15^2 .

It is not an unprimeable number, because it can be changed into a prime (6651467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1662865 + ... + 1662868.

Almost surely, 2^6651466 is an apocalyptic number.

6651466 is a deficient number, since it is larger than the sum of its proper divisors (3325736).

6651466 is a wasteful number, since it uses less digits than its factorization.

6651466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3325735.

The product of its digits is 25920, while the sum is 34.

The square root of 6651466 is about 2579.0436211898. The cubic root of 6651466 is about 188.0640531703.

It can be divided in two parts, 6651 and 466, that added together give a palindrome (7117).

The spelling of 6651466 in words is "six million, six hundred fifty-one thousand, four hundred sixty-six".