566465421 has 4 divisors (see below), whose sum is σ = 755287232. Its totient is φ = 377643612.

The previous prime is 566465399. The next prime is 566465437. The reversal of 566465421 is 124564665.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 566465421 - 2⁶ = 566465357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 566465421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (566465521) 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, 94410901 + ... + 94410906.

It is an arithmetic number, because the mean of its divisors is an integer number (188821808).

Almost surely, 2^566465421 is an apocalyptic number.

It is an amenable number.

566465421 is a deficient number, since it is larger than the sum of its proper divisors (188821811).

566465421 is a wasteful number, since it uses less digits than its factorization.

566465421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188821810.

The product of its digits is 172800, while the sum is 39.

The square root of 566465421 is about 23800.5340486301. The cubic root of 566465421 is about 827.4170542053.

The spelling of 566465421 in words is "five hundred sixty-six million, four hundred sixty-five thousand, four hundred twenty-one".