7766441 has 2 divisors, whose sum is σ = 7766442. Its totient is φ = 7766440.

The previous prime is 7766419. The next prime is 7766443. The reversal of 7766441 is 1446677.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4141225 + 3625216 = 2035^2 + 1904^2 .

It is a cyclic number.

It is not a de Polignac number, because 7766441 - 2²² = 3572137 is a prime.

Together with 7766443, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a nialpdrome in base 10.

It is not a weakly prime, because it can be changed into another prime (7766443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3883220 + 3883221.

It is an arithmetic number, because the mean of its divisors is an integer number (3883221).

Almost surely, 2^7766441 is an apocalyptic number.

It is an amenable number.

7766441 is a deficient number, since it is larger than the sum of its proper divisors (1).

7766441 is an equidigital number, since it uses as much as digits as its factorization.

7766441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28224, while the sum is 35.

The square root of 7766441 is about 2786.8335077647. The cubic root of 7766441 is about 198.0344207750.

The spelling of 7766441 in words is "seven million, seven hundred sixty-six thousand, four hundred forty-one".