5674163607666 has 12 divisors (see below), whose sum is σ = 12294021149982. Its totient is φ = 1891387869216.

The previous prime is 5674163607649. The next prime is 5674163607691. The reversal of 5674163607666 is 6667063614765.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 5255258229225 + 418905378441 = 2292435^2 + 647229^2 .

It is a super-2 number, since 2×5674163607666² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 157615655751 + ... + 157615655786.

Almost surely, 2^{5674163607666} is an apocalyptic number.

5674163607666 is an abundant number, since it is smaller than the sum of its proper divisors (6619857542316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5674163607666 is a wasteful number, since it uses less digits than its factorization.

5674163607666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315231311545 (or 315231311542 counting only the distinct ones).

The product of its (nonzero) digits is 137168640, while the sum is 63.

The spelling of 5674163607666 in words is "five trillion, six hundred seventy-four billion, one hundred sixty-three million, six hundred seven thousand, six hundred sixty-six".