564786461 has 4 divisors (see below), whose sum is σ = 598009212. Its totient is φ = 531563712.

The previous prime is 564786449. The next prime is 564786491. The reversal of 564786461 is 164687465.

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

It can be written as a sum of positive squares in 2 ways, for example, as 441798361 + 122988100 = 21019^2 + 11090^2 .

It is a cyclic number.

It is not a de Polignac number, because 564786461 - 2²² = 560592157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564786401) 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, 16611350 + ... + 16611383.

It is an arithmetic number, because the mean of its divisors is an integer number (149502303).

Almost surely, 2^564786461 is an apocalyptic number.

It is an amenable number.

564786461 is a deficient number, since it is larger than the sum of its proper divisors (33222751).

564786461 is a wasteful number, since it uses less digits than its factorization.

564786461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33222750.

The product of its digits is 967680, while the sum is 47.

The square root of 564786461 is about 23765.2363968886. The cubic root of 564786461 is about 826.5987783704.

The spelling of 564786461 in words is "five hundred sixty-four million, seven hundred eighty-six thousand, four hundred sixty-one".