5663297491 has 8 divisors (see below), whose sum is σ = 5991630480. Its totient is φ = 5337991008.

The previous prime is 5663297483. The next prime is 5663297503. The reversal of 5663297491 is 1947923665.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5663297491 - 2³ = 5663297483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5663297891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 752776 + ... + 760261.

It is an arithmetic number, because the mean of its divisors is an integer number (748953810).

Almost surely, 2^5663297491 is an apocalyptic number.

5663297491 is a deficient number, since it is larger than the sum of its proper divisors (328332989).

5663297491 is a wasteful number, since it uses less digits than its factorization.

5663297491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513253.

The product of its digits is 2449440, while the sum is 52.

The square root of 5663297491 is about 75254.8835026671. The cubic root of 5663297491 is about 1782.4736775631.

The spelling of 5663297491 in words is "five billion, six hundred sixty-three million, two hundred ninety-seven thousand, four hundred ninety-one".