2664443 has 2 divisors, whose sum is σ = 2664444. Its totient is φ = 2664442.

The previous prime is 2664439. The next prime is 2664449. The reversal of 2664443 is 3444662.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2664443 - 2² = 2664439 is a prime.

It is a d-powerful number, because it can be written as 2²¹ + 6⁵ + 6⁷ + 4⁵ + 4⁷ + 4⁹ + 3³ .

It is not a weakly prime, because it can be changed into another prime (2664449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1332221 + 1332222.

It is an arithmetic number, because the mean of its divisors is an integer number (1332222).

2^2664443 is an apocalyptic number.

2664443 is a deficient number, since it is larger than the sum of its proper divisors (1).

2664443 is an equidigital number, since it uses as much as digits as its factorization.

2664443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 29.

The square root of 2664443 is about 1632.3121637726. The cubic root of 2664443 is about 138.6336990424.

The spelling of 2664443 in words is "two million, six hundred sixty-four thousand, four hundred forty-three".