169410561 has 8 divisors (see below), whose sum is σ = 226278624. Its totient is φ = 112741440.

The previous prime is 169410557. The next prime is 169410581. The reversal of 169410561 is 165014961.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 169410561 - 2² = 169410557 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (169410581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47736 + ... + 51161.

It is an arithmetic number, because the mean of its divisors is an integer number (28284828).

It is a Proth number, since it is equal to 2585 ⋅ 2¹⁶ + 1 and 2585 < 2¹⁶.

Almost surely, 2^169410561 is an apocalyptic number.

It is an amenable number.

169410561 is a deficient number, since it is larger than the sum of its proper divisors (56868063).

169410561 is an equidigital number, since it uses as much as digits as its factorization.

169410561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99471.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 169410561 is about 13015.7812289543. The cubic root of 169410561 is about 553.3248312027.

The spelling of 169410561 in words is "one hundred sixty-nine million, four hundred ten thousand, five hundred sixty-one".