5621647775 has 12 divisors (see below), whose sum is σ = 6980952744. Its totient is φ = 4490796000.

The previous prime is 5621647763. The next prime is 5621647789. The reversal of 5621647775 is 5777461265.

It is not a de Polignac number, because 5621647775 - 2¹⁴ = 5621631391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 145436 + ... + 179985.

It is an arithmetic number, because the mean of its divisors is an integer number (581746062).

Almost surely, 2^5621647775 is an apocalyptic number.

5621647775 is a deficient number, since it is larger than the sum of its proper divisors (1359304969).

5621647775 is a wasteful number, since it uses less digits than its factorization.

5621647775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326122 (or 326117 counting only the distinct ones).

The product of its digits is 2469600, while the sum is 50.

The square root of 5621647775 is about 74977.6485027371. The cubic root of 5621647775 is about 1778.0932929546.

The spelling of 5621647775 in words is "five billion, six hundred twenty-one million, six hundred forty-seven thousand, seven hundred seventy-five".