169608961 has 4 divisors (see below), whose sum is σ = 169638912. Its totient is φ = 169579012.

The previous prime is 169608941. The next prime is 169608973. The reversal of 169608961 is 169806961.

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 not a de Polignac number, because 169608961 - 2⁹ = 169608449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (169608941) 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, 3601 + ... + 18766.

It is an arithmetic number, because the mean of its divisors is an integer number (42409728).

Almost surely, 2^169608961 is an apocalyptic number.

It is an amenable number.

169608961 is a deficient number, since it is larger than the sum of its proper divisors (29951).

169608961 is an equidigital number, since it uses as much as digits as its factorization.

169608961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29950.

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 169608961 is about 13023.4005159943. The cubic root of 169608961 is about 553.5407500898.

It can be divided in two parts, 169608 and 961, that added together give a square (170569 = 413²).

The spelling of 169608961 in words is "one hundred sixty-nine million, six hundred eight thousand, nine hundred sixty-one".