7666515828 has 72 divisors (see below), whose sum is σ = 19609349760. Its totient is φ = 2525342400.

The previous prime is 7666515793. The next prime is 7666515839. The reversal of 7666515828 is 8285156667.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1067313 + ... + 1074471.

It is an arithmetic number, because the mean of its divisors is an integer number (272352080).

Almost surely, 2^7666515828 is an apocalyptic number.

It is an amenable number.

7666515828 is an abundant number, since it is smaller than the sum of its proper divisors (11942833932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7666515828 is a wasteful number, since it uses less digits than its factorization.

7666515828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7517 (or 7512 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 54.

The square root of 7666515828 is about 87558.6422233694. The cubic root of 7666515828 is about 1971.8143015057.

The spelling of 7666515828 in words is "seven billion, six hundred sixty-six million, five hundred fifteen thousand, eight hundred twenty-eight".