7866304661 has 8 divisors (see below), whose sum is σ = 7882976640. Its totient is φ = 7849649808.

The previous prime is 7866304657. The next prime is 7866304729. The reversal of 7866304661 is 1664036687.

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

It is a cyclic number.

It is not a de Polignac number, because 7866304661 - 2² = 7866304657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7866306661) by changing a digit.

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, 1306520 + ... + 1312526.

It is an arithmetic number, because the mean of its divisors is an integer number (985372080).

Almost surely, 2^7866304661 is an apocalyptic number.

It is an amenable number.

7866304661 is a deficient number, since it is larger than the sum of its proper divisors (16671979).

7866304661 is a wasteful number, since it uses less digits than its factorization.

7866304661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8563.

The product of its (nonzero) digits is 870912, while the sum is 47.

The square root of 7866304661 is about 88692.1905299446. The cubic root of 7866304661 is about 1988.7960749826.

The spelling of 7866304661 in words is "seven billion, eight hundred sixty-six million, three hundred four thousand, six hundred sixty-one".