161717376 has 64 divisors (see below), whose sum is σ = 432561600. Its totient is φ = 53529600.

The previous prime is 161717357. The next prime is 161717383. The reversal of 161717376 is 673717161.

161717376 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 56590 + ... + 59378.

It is an arithmetic number, because the mean of its divisors is an integer number (6758775).

Almost surely, 2^161717376 is an apocalyptic number.

161717376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161717376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216280800).

161717376 is an abundant number, since it is smaller than the sum of its proper divisors (270844224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161717376 is a wasteful number, since it uses less digits than its factorization.

161717376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2957 (or 2945 counting only the distinct ones).

The product of its digits is 37044, while the sum is 39.

The square root of 161717376 is about 12716.8146955124. The cubic root of 161717376 is about 544.8189798050.

The spelling of 161717376 in words is "one hundred sixty-one million, seven hundred seventeen thousand, three hundred seventy-six".