561206867 has 4 divisors (see below), whose sum is σ = 604376640. Its totient is φ = 518037096.

The previous prime is 561206851. The next prime is 561206909. The reversal of 561206867 is 768602165.

561206867 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 561206867 - 2⁴ = 561206851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561206267) 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, 21584867 + ... + 21584892.

It is an arithmetic number, because the mean of its divisors is an integer number (151094160).

Almost surely, 2^561206867 is an apocalyptic number.

561206867 is a deficient number, since it is larger than the sum of its proper divisors (43169773).

561206867 is a wasteful number, since it uses less digits than its factorization.

561206867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43169772.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 561206867 is about 23689.8051279448. The cubic root of 561206867 is about 824.8487592977.

The spelling of 561206867 in words is "five hundred sixty-one million, two hundred six thousand, eight hundred sixty-seven".