5667645664 has 24 divisors (see below), whose sum is σ = 11341102248. Its totient is φ = 2787365760.

The previous prime is 5667645647. The next prime is 5667645667. The reversal of 5667645664 is 4665467665.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5667645667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1449802 + ... + 1453705.

It is an arithmetic number, because the mean of its divisors is an integer number (472545927).

Almost surely, 2^5667645664 is an apocalyptic number.

It is an amenable number.

5667645664 is an abundant number, since it is smaller than the sum of its proper divisors (5673456584).

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

5667645664 is a wasteful number, since it uses less digits than its factorization.

5667645664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2903578 (or 2903570 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 55.

The square root of 5667645664 is about 75283.7675996625. The cubic root of 5667645664 is about 1782.9297440869.

The spelling of 5667645664 in words is "five billion, six hundred sixty-seven million, six hundred forty-five thousand, six hundred sixty-four".