564640887 has 8 divisors (see below), whose sum is σ = 762384640. Its totient is φ = 371662200.

The previous prime is 564640849. The next prime is 564640897. The reversal of 564640887 is 788046465.

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

It is not a de Polignac number, because 564640887 - 2⁸ = 564640631 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 (564640897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1190989 + ... + 1191462.

It is an arithmetic number, because the mean of its divisors is an integer number (95298080).

Almost surely, 2^564640887 is an apocalyptic number.

564640887 is a deficient number, since it is larger than the sum of its proper divisors (197743753).

564640887 is a wasteful number, since it uses less digits than its factorization.

564640887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2382533.

The product of its (nonzero) digits is 1290240, while the sum is 48.

The square root of 564640887 is about 23762.1734485716. The cubic root of 564640887 is about 826.5277535148.

The spelling of 564640887 in words is "five hundred sixty-four million, six hundred forty thousand, eight hundred eighty-seven".