417665161 has 4 divisors (see below), whose sum is σ = 417757824. Its totient is φ = 417572500.

The previous prime is 417665153. The next prime is 417665173. The reversal of 417665161 is 161566714.

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 417665161 - 2³ = 417665153 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 417665161.

It is not an unprimeable number, because it can be changed into a prime (417665141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39205 + ... + 48706.

It is an arithmetic number, because the mean of its divisors is an integer number (104439456).

Almost surely, 2^417665161 is an apocalyptic number.

It is an amenable number.

417665161 is a deficient number, since it is larger than the sum of its proper divisors (92663).

417665161 is an equidigital number, since it uses as much as digits as its factorization.

417665161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92662.

The product of its digits is 30240, while the sum is 37.

The square root of 417665161 is about 20436.8579042866. The cubic root of 417665161 is about 747.4969361142.

The spelling of 417665161 in words is "four hundred seventeen million, six hundred sixty-five thousand, one hundred sixty-one".