566321403 has 4 divisors (see below), whose sum is σ = 755095208. Its totient is φ = 377547600.

The previous prime is 566321389. The next prime is 566321419. The reversal of 566321403 is 304123665.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 566321403 - 2¹⁸ = 566059259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (566321603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94386898 + ... + 94386903.

It is an arithmetic number, because the mean of its divisors is an integer number (188773802).

Almost surely, 2^566321403 is an apocalyptic number.

566321403 is a deficient number, since it is larger than the sum of its proper divisors (188773805).

566321403 is a wasteful number, since it uses less digits than its factorization.

566321403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188773804.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 566321403 is about 23797.5083359582. The cubic root of 566321403 is about 827.3469275068.

The spelling of 566321403 in words is "five hundred sixty-six million, three hundred twenty-one thousand, four hundred three".