561729067 has 4 divisors (see below), whose sum is σ = 569640816. Its totient is φ = 553817320.

The previous prime is 561729059. The next prime is 561729073. The reversal of 561729067 is 760927165.

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 561729067 - 2³ = 561729059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561729017) 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, 3955768 + ... + 3955909.

It is an arithmetic number, because the mean of its divisors is an integer number (142410204).

Almost surely, 2^561729067 is an apocalyptic number.

561729067 is a deficient number, since it is larger than the sum of its proper divisors (7911749).

561729067 is an equidigital number, since it uses as much as digits as its factorization.

561729067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7911748.

The product of its (nonzero) digits is 158760, while the sum is 43.

The square root of 561729067 is about 23700.8241839815. The cubic root of 561729067 is about 825.1045191118.

The spelling of 561729067 in words is "five hundred sixty-one million, seven hundred twenty-nine thousand, sixty-seven".