7680521 has 4 divisors (see below), whose sum is σ = 7694544. Its totient is φ = 7666500.

The previous prime is 7680509. The next prime is 7680523. The reversal of 7680521 is 1250867.

7680521 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7680521 - 2¹⁸ = 7418377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7680523) 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, 6155 + ... + 7296.

It is an arithmetic number, because the mean of its divisors is an integer number (1923636).

Almost surely, 2^7680521 is an apocalyptic number.

It is an amenable number.

7680521 is a deficient number, since it is larger than the sum of its proper divisors (14023).

7680521 is a wasteful number, since it uses less digits than its factorization.

7680521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14022.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 7680521 is about 2771.3752903568. The cubic root of 7680521 is about 197.3014272917.

The spelling of 7680521 in words is "seven million, six hundred eighty thousand, five hundred twenty-one".