564620655 has 8 divisors (see below), whose sum is σ = 903393072. Its totient is φ = 301131008.

The previous prime is 564620647. The next prime is 564620681. The reversal of 564620655 is 556026465.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 564620655 - 2³ = 564620647 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18820674 + ... + 18820703.

It is an arithmetic number, because the mean of its divisors is an integer number (112924134).

Almost surely, 2^564620655 is an apocalyptic number.

564620655 is a deficient number, since it is larger than the sum of its proper divisors (338772417).

564620655 is a wasteful number, since it uses less digits than its factorization.

564620655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37641385.

The product of its (nonzero) digits is 216000, while the sum is 39.

The square root of 564620655 is about 23761.7477261249. The cubic root of 564620655 is about 826.5178814529.

The spelling of 564620655 in words is "five hundred sixty-four million, six hundred twenty thousand, six hundred fifty-five".