2664447 has 8 divisors (see below), whose sum is σ = 3575856. Its totient is φ = 1764672.

The previous prime is 2664443. The next prime is 2664449. The reversal of 2664447 is 7444662.

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

It is not a de Polignac number, because 2664447 - 2² = 2664443 is a prime.

It is a d-powerful number, because it can be written as 2²¹ + 6³ + 6⁷ + 4⁶ + 4⁶ + 4⁹ + 7⁵ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2664443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2358 + ... + 3299.

It is an arithmetic number, because the mean of its divisors is an integer number (446982).

2^2664447 is an apocalyptic number.

2664447 is a deficient number, since it is larger than the sum of its proper divisors (911409).

2664447 is a wasteful number, since it uses less digits than its factorization.

2664447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5817.

The product of its digits is 32256, while the sum is 33.

The square root of 2664447 is about 1632.3133890280. The cubic root of 2664447 is about 138.6337684170.

The spelling of 2664447 in words is "two million, six hundred sixty-four thousand, four hundred forty-seven".