564339426 has 64 divisors (see below), whose sum is σ = 1319915520. Its totient is φ = 157527360.

The previous prime is 564339379. The next prime is 564339473. The reversal of 564339426 is 624933465.

It is an interprime number because it is at equal distance from previous prime (564339379) and next prime (564339473).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 427195 + ... + 428513.

It is an arithmetic number, because the mean of its divisors is an integer number (20623680).

Almost surely, 2^564339426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 564339426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (659957760).

564339426 is an abundant number, since it is smaller than the sum of its proper divisors (755576094).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

564339426 is a wasteful number, since it uses less digits than its factorization.

564339426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1559.

The product of its digits is 466560, while the sum is 42.

The square root of 564339426 is about 23755.8293056673. The cubic root of 564339426 is about 826.3806333155.

The spelling of 564339426 in words is "five hundred sixty-four million, three hundred thirty-nine thousand, four hundred twenty-six".