5644591797 has 16 divisors (see below), whose sum is σ = 8166932928. Its totient is φ = 3447075840.

The previous prime is 5644591783. The next prime is 5644591819. The reversal of 5644591797 is 7971954465.

It is a happy number.

It is not a de Polignac number, because 5644591797 - 2⁴ = 5644591781 is a prime.

It is a super-2 number, since 2×5644591797² = 63722833109519378418, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5644591717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 547308 + ... + 557525.

It is an arithmetic number, because the mean of its divisors is an integer number (510433308).

Almost surely, 2^5644591797 is an apocalyptic number.

It is an amenable number.

5644591797 is a deficient number, since it is larger than the sum of its proper divisors (2522341131).

5644591797 is a wasteful number, since it uses less digits than its factorization.

5644591797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104980.

The product of its digits is 9525600, while the sum is 57.

The square root of 5644591797 is about 75130.4984477010. The cubic root of 5644591797 is about 1780.5090280292.

The spelling of 5644591797 in words is "five billion, six hundred forty-four million, five hundred ninety-one thousand, seven hundred ninety-seven".