161744017 has 8 divisors (see below), whose sum is σ = 170968160. Its totient is φ = 152591040.

The previous prime is 161743999. The next prime is 161744021. The reversal of 161744017 is 710447161.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161744017 is a prime.

It is a super-2 number, since 2×161744017² = 52322254070592578, which contains 22 as substring.

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 161744017.

It is not an unprimeable number, because it can be changed into a prime (161744087) 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, 13083 + ... + 22240.

It is an arithmetic number, because the mean of its divisors is an integer number (21371020).

Almost surely, 2^161744017 is an apocalyptic number.

It is an amenable number.

161744017 is a deficient number, since it is larger than the sum of its proper divisors (9224143).

161744017 is a wasteful number, since it uses less digits than its factorization.

161744017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35583.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 161744017 is about 12717.8621238005. The cubic root of 161744017 is about 544.8488956286.

The spelling of 161744017 in words is "one hundred sixty-one million, seven hundred forty-four thousand, seventeen".