7666943806 has 8 divisors (see below), whose sum is σ = 11605924440. Its totient is φ = 3798302328.

The previous prime is 7666943723. The next prime is 7666943807. The reversal of 7666943806 is 6083496667.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7666943807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17584516 + ... + 17584951.

It is an arithmetic number, because the mean of its divisors is an integer number (1450740555).

Almost surely, 2^7666943806 is an apocalyptic number.

7666943806 is a deficient number, since it is larger than the sum of its proper divisors (3938980634).

7666943806 is a wasteful number, since it uses less digits than its factorization.

7666943806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35169578.

The product of its (nonzero) digits is 7838208, while the sum is 55.

The square root of 7666943806 is about 87561.0861399058. The cubic root of 7666943806 is about 1971.8509925510.

The spelling of 7666943806 in words is "seven billion, six hundred sixty-six million, nine hundred forty-three thousand, eight hundred six".