7666534520 has 16 divisors (see below), whose sum is σ = 17249702760. Its totient is φ = 3066613792.

The previous prime is 7666534487. The next prime is 7666534531. The reversal of 7666534520 is 254356667.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95831642 + ... + 95831721.

Almost surely, 2^7666534520 is an apocalyptic number.

It is an amenable number.

7666534520 is an abundant number, since it is smaller than the sum of its proper divisors (9583168240).

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

7666534520 is a wasteful number, since it uses less digits than its factorization.

7666534520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191663374 (or 191663370 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 44.

The square root of 7666534520 is about 87558.7489631961. The cubic root of 7666534520 is about 1971.8159040208.

The spelling of 7666534520 in words is "seven billion, six hundred sixty-six million, five hundred thirty-four thousand, five hundred twenty".