561606167 has 2 divisors, whose sum is σ = 561606168. Its totient is φ = 561606166.

The previous prime is 561606163. The next prime is 561606173. The reversal of 561606167 is 761606165.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 561606167 - 2² = 561606163 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 561606167.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561606163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280803083 + 280803084.

It is an arithmetic number, because the mean of its divisors is an integer number (280803084).

Almost surely, 2^561606167 is an apocalyptic number.

561606167 is a deficient number, since it is larger than the sum of its proper divisors (1).

561606167 is an equidigital number, since it uses as much as digits as its factorization.

561606167 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 561606167 is about 23698.2313053105. The cubic root of 561606167 is about 825.0443401942.

The spelling of 561606167 in words is "five hundred sixty-one million, six hundred six thousand, one hundred sixty-seven".