566373721 has 8 divisors (see below), whose sum is σ = 570240000. Its totient is φ = 562515600.

The previous prime is 566373697. The next prime is 566373727. The reversal of 566373721 is 127373665.

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 566373721 - 2⁹ = 566373209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (566373727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204655 + ... + 207403.

It is an arithmetic number, because the mean of its divisors is an integer number (71280000).

Almost surely, 2^566373721 is an apocalyptic number.

It is an amenable number.

566373721 is a deficient number, since it is larger than the sum of its proper divisors (3866279).

566373721 is a wasteful number, since it uses less digits than its factorization.

566373721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4079.

The product of its digits is 158760, while the sum is 40.

The square root of 566373721 is about 23798.6075432997. The cubic root of 566373721 is about 827.3724040904.

The spelling of 566373721 in words is "five hundred sixty-six million, three hundred seventy-three thousand, seven hundred twenty-one".