7031639666 has 16 divisors (see below), whose sum is σ = 10899409920. Its totient is φ = 3398747040.

The previous prime is 7031639653. The next prime is 7031639677. The reversal of 7031639666 is 6669361307.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 7031639666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2426 + ... + 118613.

It is an arithmetic number, because the mean of its divisors is an integer number (681213120).

Almost surely, 2^7031639666 is an apocalyptic number.

7031639666 is a deficient number, since it is larger than the sum of its proper divisors (3867770254).

7031639666 is a wasteful number, since it uses less digits than its factorization.

7031639666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122009.

The product of its (nonzero) digits is 734832, while the sum is 47.

The square root of 7031639666 is about 83854.8726431565. The cubic root of 7031639666 is about 1915.8089705205.

The spelling of 7031639666 in words is "seven billion, thirty-one million, six hundred thirty-nine thousand, six hundred sixty-six".