5666810807 has 16 divisors (see below), whose sum is σ = 6590717952. Its totient is φ = 4772144160.

The previous prime is 5666810803. The next prime is 5666810861. The reversal of 5666810807 is 7080186665.

It is not a de Polignac number, because 5666810807 - 2² = 5666810803 is a prime.

It is a super-2 number, since 2×5666810807² = 64225489444663982498, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5666810803) 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, 78218 + ... + 132104.

It is an arithmetic number, because the mean of its divisors is an integer number (411919872).

Almost surely, 2^5666810807 is an apocalyptic number.

5666810807 is a deficient number, since it is larger than the sum of its proper divisors (923907145).

5666810807 is a wasteful number, since it uses less digits than its factorization.

5666810807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54158.

The product of its (nonzero) digits is 483840, while the sum is 47.

The square root of 5666810807 is about 75278.2226610060. Note that the first 3 decimals coincide. The cubic root of 5666810807 is about 1782.8421965961.

The spelling of 5666810807 in words is "five billion, six hundred sixty-six million, eight hundred ten thousand, eight hundred seven".