564140398 has 4 divisors (see below), whose sum is σ = 846210600. Its totient is φ = 282070198.

The previous prime is 564140341. The next prime is 564140399. The reversal of 564140398 is 893041465.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 564140398.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564140399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 141035098 + ... + 141035101.

It is an arithmetic number, because the mean of its divisors is an integer number (211552650).

Almost surely, 2^564140398 is an apocalyptic number.

564140398 is a deficient number, since it is larger than the sum of its proper divisors (282070202).

564140398 is a wasteful number, since it uses less digits than its factorization.

564140398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282070201.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 564140398 is about 23751.6399012784. The cubic root of 564140398 is about 826.2834741615.

The spelling of 564140398 in words is "five hundred sixty-four million, one hundred forty thousand, three hundred ninety-eight".