5667997665 has 64 divisors (see below), whose sum is σ = 10134097920. Its totient is φ = 2681571840.

The previous prime is 5667997637. The next prime is 5667997667.

5667997665 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 5667997665 - 2¹⁰ = 5667996641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5667997596 and 5667997605.

It is not an unprimeable number, because it can be changed into a prime (5667997667) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3170902 + ... + 3172688.

It is an arithmetic number, because the mean of its divisors is an integer number (158345280).

Almost surely, 2^5667997665 is an apocalyptic number.

5667997665 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5667997665 is a deficient number, since it is larger than the sum of its proper divisors (4466100255).

5667997665 is a wasteful number, since it uses less digits than its factorization.

5667997665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2262.

The product of its digits is 128595600, while the sum is 66.

The square root of 5667997665 is about 75286.1053913669. The cubic root of 5667997665 is about 1782.9666541843.

The spelling of 5667997665 in words is "five billion, six hundred sixty-seven million, nine hundred ninety-seven thousand, six hundred sixty-five".