161617060 has 48 divisors (see below), whose sum is σ = 376350912. Its totient is φ = 57801600.

The previous prime is 161617051. The next prime is 161617063. The reversal of 161617060 is 60716161.

It is a super-2 number, since 2×161617060² = 52240148166087200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (161617063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7399 + ... + 19441.

It is an arithmetic number, because the mean of its divisors is an integer number (7840644).

Almost surely, 2^161617060 is an apocalyptic number.

161617060 is a gapful number since it is divisible by the number (10) 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 161617060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188175456).

161617060 is an abundant number, since it is smaller than the sum of its proper divisors (214733852).

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

161617060 is a wasteful number, since it uses less digits than its factorization.

161617060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12124 (or 12122 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 161617060 is about 12712.8698569599. The cubic root of 161617060 is about 544.7063030538.

The spelling of 161617060 in words is "one hundred sixty-one million, six hundred seventeen thousand, sixty".