2669729 has 2 divisors, whose sum is σ = 2669730. Its totient is φ = 2669728.

The previous prime is 2669717. The next prime is 2669753. The reversal of 2669729 is 9279662.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2608225 + 61504 = 1615^2 + 248^2 .

It is a cyclic number.

It is not a de Polignac number, because 2669729 - 2²⁰ = 1621153 is a prime.

It is not a weakly prime, because it can be changed into another prime (2669789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1334864 + 1334865.

It is an arithmetic number, because the mean of its divisors is an integer number (1334865).

2^2669729 is an apocalyptic number.

It is an amenable number.

2669729 is a deficient number, since it is larger than the sum of its proper divisors (1).

2669729 is an equidigital number, since it uses as much as digits as its factorization.

2669729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 41.

The square root of 2669729 is about 1633.9305370792. The cubic root of 2669729 is about 138.7253171471.

The spelling of 2669729 in words is "two million, six hundred sixty-nine thousand, seven hundred twenty-nine".