7666441 has 4 divisors (see below), whose sum is σ = 7672084. Its totient is φ = 7660800.

The previous prime is 7666433. The next prime is 7666453. The reversal of 7666441 is 1446667.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1446667 = 239 ⋅6053.

It can be written as a sum of positive squares in 2 ways, for example, as 5198400 + 2468041 = 2280^2 + 1571^2 .

It is a cyclic number.

It is not a de Polignac number, because 7666441 - 2³ = 7666433 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 7666397 and 7666406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7666741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 601 + ... + 3961.

It is an arithmetic number, because the mean of its divisors is an integer number (1918021).

Almost surely, 2^7666441 is an apocalyptic number.

It is an amenable number.

7666441 is a deficient number, since it is larger than the sum of its proper divisors (5643).

7666441 is a wasteful number, since it uses less digits than its factorization.

7666441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5642.

The product of its digits is 24192, while the sum is 34.

The square root of 7666441 is about 2768.8338700615. The cubic root of 7666441 is about 197.1807886275.

The spelling of 7666441 in words is "seven million, six hundred sixty-six thousand, four hundred forty-one".