564278323 has 4 divisors (see below), whose sum is σ = 644889520. Its totient is φ = 483667128.

The previous prime is 564278279. The next prime is 564278327. The reversal of 564278323 is 323872465.

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

It is not a de Polignac number, because 564278323 - 2⁹ = 564277811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (564278327) 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, 40305588 + ... + 40305601.

It is an arithmetic number, because the mean of its divisors is an integer number (161222380).

Almost surely, 2^564278323 is an apocalyptic number.

564278323 is a deficient number, since it is larger than the sum of its proper divisors (80611197).

564278323 is an equidigital number, since it uses as much as digits as its factorization.

564278323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80611196.

The product of its digits is 241920, while the sum is 40.

The square root of 564278323 is about 23754.5432075635. The cubic root of 564278323 is about 826.3508072002.

The spelling of 564278323 in words is "five hundred sixty-four million, two hundred seventy-eight thousand, three hundred twenty-three".