561596867 has 4 divisors (see below), whose sum is σ = 604796640. Its totient is φ = 518397096.

The previous prime is 561596863. The next prime is 561596897. The reversal of 561596867 is 768695165.

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

It is a cyclic number.

It is not a de Polignac number, because 561596867 - 2² = 561596863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561596863) 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, 21599867 + ... + 21599892.

It is an arithmetic number, because the mean of its divisors is an integer number (151199160).

Almost surely, 2^561596867 is an apocalyptic number.

561596867 is a deficient number, since it is larger than the sum of its proper divisors (43199773).

561596867 is a wasteful number, since it uses less digits than its factorization.

561596867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43199772.

The product of its digits is 2721600, while the sum is 53.

The square root of 561596867 is about 23698.0350873232. The cubic root of 561596867 is about 825.0397860213.

The spelling of 561596867 in words is "five hundred sixty-one million, five hundred ninety-six thousand, eight hundred sixty-seven".