5664112781 has 8 divisors (see below), whose sum is σ = 5997929280. Its totient is φ = 5333866848.

The previous prime is 5664112763. The next prime is 5664112787. The reversal of 5664112781 is 1872114665.

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 5664112781 - 2¹⁰ = 5664111757 is a prime.

It is a super-2 number, since 2×5664112781² = 64164347191775107922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5664112787) 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, 889376 + ... + 895721.

It is an arithmetic number, because the mean of its divisors is an integer number (749741160).

Almost surely, 2^5664112781 is an apocalyptic number.

It is an amenable number.

5664112781 is a deficient number, since it is larger than the sum of its proper divisors (333816499).

5664112781 is a wasteful number, since it uses less digits than its factorization.

5664112781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1785283.

The product of its digits is 80640, while the sum is 41.

The square root of 5664112781 is about 75260.3001654923. The cubic root of 5664112781 is about 1782.5592086067.

The spelling of 5664112781 in words is "five billion, six hundred sixty-four million, one hundred twelve thousand, seven hundred eighty-one".