7680866 has 8 divisors (see below), whose sum is σ = 11738844. Its totient is φ = 3767920.

The previous prime is 7680863. The next prime is 7680877. The reversal of 7680866 is 6680867.

It can be written as a sum of positive squares in 2 ways, for example, as 6105841 + 1575025 = 2471^2 + 1255^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7680863) 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, 36125 + ... + 36336.

Almost surely, 2^7680866 is an apocalyptic number.

7680866 is a deficient number, since it is larger than the sum of its proper divisors (4057978).

7680866 is a wasteful number, since it uses less digits than its factorization.

7680866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72516.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 7680866 is about 2771.4375331225. The cubic root of 7680866 is about 197.3043814304.

Subtracting from 7680866 its reverse (6680867), we obtain a palindrome (999999).

The spelling of 7680866 in words is "seven million, six hundred eighty thousand, eight hundred sixty-six".