564620233 has 4 divisors (see below), whose sum is σ = 566869968. Its totient is φ = 562370500.

The previous prime is 564620213. The next prime is 564620263. The reversal of 564620233 is 332026465.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 332026465 = 5 ⋅66405293.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-564620233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 564620195 and 564620204.

It is not an unprimeable number, because it can be changed into a prime (564620213) 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, 1124491 + ... + 1124992.

It is an arithmetic number, because the mean of its divisors is an integer number (141717492).

Almost surely, 2^564620233 is an apocalyptic number.

It is an amenable number.

564620233 is a deficient number, since it is larger than the sum of its proper divisors (2249735).

564620233 is a wasteful number, since it uses less digits than its factorization.

564620233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2249734.

The product of its (nonzero) digits is 25920, while the sum is 31.

The square root of 564620233 is about 23761.7388463050. The cubic root of 564620233 is about 826.5176755385.

Adding to 564620233 its reverse (332026465), we get a palindrome (896646698).

The spelling of 564620233 in words is "five hundred sixty-four million, six hundred twenty thousand, two hundred thirty-three".