564137887 has 4 divisors (see below), whose sum is σ = 565287336. Its totient is φ = 562988440.

The previous prime is 564137879. The next prime is 564137897. The reversal of 564137887 is 788731465.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 788731465 = 5 ⋅157746293.

It is a cyclic number.

It is not a de Polignac number, because 564137887 - 2³ = 564137879 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 564137887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564137837) 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, 573988 + ... + 574969.

It is an arithmetic number, because the mean of its divisors is an integer number (141321834).

Almost surely, 2^564137887 is an apocalyptic number.

564137887 is a deficient number, since it is larger than the sum of its proper divisors (1149449).

564137887 is a wasteful number, since it uses less digits than its factorization.

564137887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149448.

The product of its digits is 1128960, while the sum is 49.

The square root of 564137887 is about 23751.5870417115. The cubic root of 564137887 is about 826.2822482250.

It can be divided in two parts, 5641378 and 87, that added together give a palindrome (5641465).

The spelling of 564137887 in words is "five hundred sixty-four million, one hundred thirty-seven thousand, eight hundred eighty-seven".