5663927997 has 80 divisors (see below), whose sum is σ = 10866535680. Its totient is φ = 2857586688.

The previous prime is 5663927977. The next prime is 5663927999. The reversal of 5663927997 is 7997293665.

It is not a de Polignac number, because 5663927997 - 2¹⁰ = 5663926973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5663927999) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 152829 + ... + 186237.

It is an arithmetic number, because the mean of its divisors is an integer number (135831696).

Almost surely, 2^5663927997 is an apocalyptic number.

It is an amenable number.

5663927997 is a deficient number, since it is larger than the sum of its proper divisors (5202607683).

5663927997 is a wasteful number, since it uses less digits than its factorization.

5663927997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33464 (or 33455 counting only the distinct ones).

The product of its digits is 38578680, while the sum is 63.

The square root of 5663927997 is about 75259.0725228527. The cubic root of 5663927997 is about 1782.5398238701.

The spelling of 5663927997 in words is "five billion, six hundred sixty-three million, nine hundred twenty-seven thousand, nine hundred ninety-seven".