2669549 has 2 divisors, whose sum is σ = 2669550. Its totient is φ = 2669548.

The previous prime is 2669521. The next prime is 2669581. The reversal of 2669549 is 9459662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1841449 + 828100 = 1357^2 + 910^2 .

It is a cyclic number.

It is not a de Polignac number, because 2669549 - 2¹⁶ = 2604013 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2669509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1334774 + 1334775.

It is an arithmetic number, because the mean of its divisors is an integer number (1334775).

2^2669549 is an apocalyptic number.

It is an amenable number.

2669549 is a deficient number, since it is larger than the sum of its proper divisors (1).

2669549 is an equidigital number, since it uses as much as digits as its factorization.

2669549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 41.

The square root of 2669549 is about 1633.8754542498. The cubic root of 2669549 is about 138.7221993377.

The spelling of 2669549 in words is "two million, six hundred sixty-nine thousand, five hundred forty-nine".