564061655 has 4 divisors (see below), whose sum is σ = 676873992. Its totient is φ = 451249320.

The previous prime is 564061651. The next prime is 564061657. The reversal of 564061655 is 556160465.

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

It is not a de Polignac number, because 564061655 - 2² = 564061651 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 (564061651) 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, 56406161 + ... + 56406170.

It is an arithmetic number, because the mean of its divisors is an integer number (169218498).

Almost surely, 2^564061655 is an apocalyptic number.

564061655 is a deficient number, since it is larger than the sum of its proper divisors (112812337).

564061655 is a wasteful number, since it uses less digits than its factorization.

564061655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112812336.

The product of its (nonzero) digits is 108000, while the sum is 38.

The square root of 564061655 is about 23749.9822105197. The cubic root of 564061655 is about 826.2450280186.

The spelling of 564061655 in words is "five hundred sixty-four million, sixty-one thousand, six hundred fifty-five".