7666049 has 4 divisors (see below), whose sum is σ = 7681620. Its totient is φ = 7650480.

The previous prime is 7666039. The next prime is 7666069. The reversal of 7666049 is 9406667.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6091024 + 1575025 = 2468^2 + 1255^2 .

It is a cyclic number.

It is not a de Polignac number, because 7666049 - 2²⁰ = 6617473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7666039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7022 + ... + 8039.

It is an arithmetic number, because the mean of its divisors is an integer number (1920405).

Almost surely, 2^7666049 is an apocalyptic number.

It is an amenable number.

7666049 is a deficient number, since it is larger than the sum of its proper divisors (15571).

7666049 is a wasteful number, since it uses less digits than its factorization.

7666049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15570.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 7666049 is about 2768.7630812332. The cubic root of 7666049 is about 197.1774278248.

The spelling of 7666049 in words is "seven million, six hundred sixty-six thousand, forty-nine".