2664449 has 2 divisors, whose sum is σ = 2664450. Its totient is φ = 2664448.

The previous prime is 2664443. The next prime is 2664451. The reversal of 2664449 is 9444662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2265025 + 399424 = 1505^2 + 632^2 .

It is a cyclic number.

It is not a de Polignac number, because 2664449 - 2¹² = 2660353 is a prime.

Together with 2664451, it forms a pair of twin primes.

It is a Chen prime.

It is a d-powerful number, because it can be written as 2¹⁹ + 6⁷ + 6⁷ + 4² + 4⁴ + 4¹⁰ + 9⁶ .

It is not a weakly prime, because it can be changed into another prime (2664443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1332224 + 1332225.

It is an arithmetic number, because the mean of its divisors is an integer number (1332225).

It is a Proth number, since it is equal to 1301 ⋅ 2¹¹ + 1 and 1301 < 2¹¹.

2^2664449 is an apocalyptic number.

It is an amenable number.

2664449 is a deficient number, since it is larger than the sum of its proper divisors (1).

2664449 is an equidigital number, since it uses as much as digits as its factorization.

2664449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 35.

The square root of 2664449 is about 1632.3140016553. The cubic root of 2664449 is about 138.6338031044.

It can be divided in two parts, 2664 and 449, that added together give a palindrome (3113).

The spelling of 2664449 in words is "two million, six hundred sixty-four thousand, four hundred forty-nine".