564620643 has 24 divisors (see below), whose sum is σ = 865566000. Its totient is φ = 353439744.

The previous prime is 564620627. The next prime is 564620647. The reversal of 564620643 is 346026465.

564620643 is a `hidden beast` number, since 5 + 6 + 4 + 6 + 2 + 0 + 643 = 666.

It is not a de Polignac number, because 564620643 - 2⁴ = 564620627 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 564620598 and 564620607.

It is not an unprimeable number, because it can be changed into a prime (564620647) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64588 + ... + 72806.

It is an arithmetic number, because the mean of its divisors is an integer number (36065250).

Almost surely, 2^564620643 is an apocalyptic number.

564620643 is a deficient number, since it is larger than the sum of its proper divisors (300945357).

564620643 is a wasteful number, since it uses less digits than its factorization.

564620643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8691 (or 8688 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The square root of 564620643 is about 23761.7474736182. The cubic root of 564620643 is about 826.5178755975.

The spelling of 564620643 in words is "five hundred sixty-four million, six hundred twenty thousand, six hundred forty-three".