7173020666 has 16 divisors (see below), whose sum is σ = 12298163904. Its totient is φ = 3073762464.

The previous prime is 7173020663. The next prime is 7173020669. The reversal of 7173020666 is 6660203717.

It is an interprime number because it is at equal distance from previous prime (7173020663) and next prime (7173020669).

It is not an unprimeable number, because it can be changed into a prime (7173020663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101006 + ... + 156678.

It is an arithmetic number, because the mean of its divisors is an integer number (768635244).

Almost surely, 2^7173020666 is an apocalyptic number.

7173020666 is a deficient number, since it is larger than the sum of its proper divisors (5125143238).

7173020666 is a wasteful number, since it uses less digits than its factorization.

7173020666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64885.

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 7173020666 is about 84693.6872854170. The cubic root of 7173020666 is about 1928.5638744071.

The spelling of 7173020666 in words is "seven billion, one hundred seventy-three million, twenty thousand, six hundred sixty-six".