195068561 has 4 divisors (see below), whose sum is σ = 195658224. Its totient is φ = 194478900.

The previous prime is 195068539. The next prime is 195068579. The reversal of 195068561 is 165860591.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-195068561 is a prime.

It is a super-2 number, since 2×195068561² = 76103486981221442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195068501) 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, 294335 + ... + 294996.

It is an arithmetic number, because the mean of its divisors is an integer number (48914556).

Almost surely, 2^195068561 is an apocalyptic number.

It is an amenable number.

195068561 is a deficient number, since it is larger than the sum of its proper divisors (589663).

195068561 is an equidigital number, since it uses as much as digits as its factorization.

195068561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589662.

The product of its (nonzero) digits is 64800, while the sum is 41.

The square root of 195068561 is about 13966.6947056202. The cubic root of 195068561 is about 579.9569538009.

The spelling of 195068561 in words is "one hundred ninety-five million, sixty-eight thousand, five hundred sixty-one".