7006066661 has 16 divisors (see below), whose sum is σ = 7997678208. Its totient is φ = 6080068800.

The previous prime is 7006066651. The next prime is 7006066663. The reversal of 7006066661 is 1666606007.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 7006066661 - 2¹⁸ = 7005804517 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7006066663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140825 + ... + 183966.

It is an arithmetic number, because the mean of its divisors is an integer number (499854888).

Almost surely, 2^7006066661 is an apocalyptic number.

It is an amenable number.

7006066661 is a deficient number, since it is larger than the sum of its proper divisors (991611547).

7006066661 is a wasteful number, since it uses less digits than its factorization.

7006066661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324892.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 7006066661 is about 83702.2500354680. The cubic root of 7006066661 is about 1913.4836472501.

The spelling of 7006066661 in words is "seven billion, six million, sixty-six thousand, six hundred sixty-one".