564506623 has 4 divisors (see below), whose sum is σ = 577634728. Its totient is φ = 551378520.

The previous prime is 564506617. The next prime is 564506633. The reversal of 564506623 is 326605465.

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

It is a cyclic number.

It is not a de Polignac number, because 564506623 - 2¹⁷ = 564375551 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 (564506603) 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, 6563988 + ... + 6564073.

It is an arithmetic number, because the mean of its divisors is an integer number (144408682).

Almost surely, 2^564506623 is an apocalyptic number.

564506623 is a deficient number, since it is larger than the sum of its proper divisors (13128105).

564506623 is a wasteful number, since it uses less digits than its factorization.

564506623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13128104.

The product of its (nonzero) digits is 129600, while the sum is 37.

The square root of 564506623 is about 23759.3481181618. The cubic root of 564506623 is about 826.4622359312.

The spelling of 564506623 in words is "five hundred sixty-four million, five hundred six thousand, six hundred twenty-three".