7666694485 has 4 divisors (see below), whose sum is σ = 9200033388. Its totient is φ = 6133355584.

The previous prime is 7666694429. The next prime is 7666694521. The reversal of 7666694485 is 5844966667.

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 3549418929 + 4117275556 = 59577^2 + 64166^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7666694485 is a prime.

It is a Duffinian 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, 766669444 + ... + 766669453.

It is an arithmetic number, because the mean of its divisors is an integer number (2300008347).

Almost surely, 2^7666694485 is an apocalyptic number.

It is an amenable number.

7666694485 is a deficient number, since it is larger than the sum of its proper divisors (1533338903).

7666694485 is a wasteful number, since it uses less digits than its factorization.

7666694485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1533338902.

The product of its digits is 52254720, while the sum is 61.

The square root of 7666694485 is about 87559.6624308248. The cubic root of 7666694485 is about 1971.8296181414.

The spelling of 7666694485 in words is "seven billion, six hundred sixty-six million, six hundred ninety-four thousand, four hundred eighty-five".