564639542 has 4 divisors (see below), whose sum is σ = 846959316. Its totient is φ = 282319770.

The previous prime is 564639533. The next prime is 564639553. The reversal of 564639542 is 245936465.

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

It is a junction number, because it is equal to n+sod(n) for n = 564639493 and 564639502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 141159884 + ... + 141159887.

It is an arithmetic number, because the mean of its divisors is an integer number (211739829).

Almost surely, 2^564639542 is an apocalyptic number.

564639542 is a deficient number, since it is larger than the sum of its proper divisors (282319774).

564639542 is a wasteful number, since it uses less digits than its factorization.

564639542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282319773.

The product of its digits is 777600, while the sum is 44.

The square root of 564639542 is about 23762.1451472715. The cubic root of 564639542 is about 826.5270972388.

The spelling of 564639542 in words is "five hundred sixty-four million, six hundred thirty-nine thousand, five hundred forty-two".