5665727815 has 48 divisors (see below), whose sum is σ = 7645500576. Its totient is φ = 3996896000.

The previous prime is 5665727801. The next prime is 5665727843. The reversal of 5665727815 is 5187275665.

It is not a de Polignac number, because 5665727815 - 2⁵ = 5665727783 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 47 ways as a sum of consecutive naturals, for example, 19336809 + ... + 19337101.

It is an arithmetic number, because the mean of its divisors is an integer number (159281262).

Almost surely, 2^5665727815 is an apocalyptic number.

5665727815 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

5665727815 is a deficient number, since it is larger than the sum of its proper divisors (1979772761).

5665727815 is a wasteful number, since it uses less digits than its factorization.

5665727815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528 (or 469 counting only the distinct ones).

The product of its digits is 3528000, while the sum is 52.

The square root of 5665727815 is about 75271.0290550089. The cubic root of 5665727815 is about 1782.7286155529.

The spelling of 5665727815 in words is "five billion, six hundred sixty-five million, seven hundred twenty-seven thousand, eight hundred fifteen".