6664456 has 8 divisors (see below), whose sum is σ = 12495870. Its totient is φ = 3332224.

The previous prime is 6664453. The next prime is 6664481. The reversal of 6664456 is 6544666.

It can be written as a sum of positive squares in only one way, i.e., 3740356 + 2924100 = 1934^2 + 1710^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (6664453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 416521 + ... + 416536.

Almost surely, 2^6664456 is an apocalyptic number.

It is an amenable number.

6664456 is a deficient number, since it is larger than the sum of its proper divisors (5831414).

6664456 is a wasteful number, since it uses less digits than its factorization.

6664456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833063 (or 833059 counting only the distinct ones).

The product of its digits is 103680, while the sum is 37.

The square root of 6664456 is about 2581.5607682176. The cubic root of 6664456 is about 188.1864003065.

The spelling of 6664456 in words is "six million, six hundred sixty-four thousand, four hundred fifty-six".