564661797 has 8 divisors (see below), whose sum is σ = 860437056. Its totient is φ = 322663872.

The previous prime is 564661781. The next prime is 564661831. The reversal of 564661797 is 797166465.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 564661797 - 2⁴ = 564661781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564666797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13444308 + ... + 13444349.

It is an arithmetic number, because the mean of its divisors is an integer number (107554632).

Almost surely, 2^564661797 is an apocalyptic number.

It is an amenable number.

564661797 is a deficient number, since it is larger than the sum of its proper divisors (295775259).

564661797 is a wasteful number, since it uses less digits than its factorization.

564661797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26888667.

The product of its digits is 1905120, while the sum is 51.

The square root of 564661797 is about 23762.6134295031. The cubic root of 564661797 is about 826.5379561541.

The spelling of 564661797 in words is "five hundred sixty-four million, six hundred sixty-one thousand, seven hundred ninety-seven".