161427660 has 96 divisors (see below), whose sum is σ = 466712064. Its totient is φ = 41664000.

The previous prime is 161427649. The next prime is 161427671. The reversal of 161427660 is 66724161.

161427660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (161427649) and next prime (161427671).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 518905 + ... + 519215.

It is an arithmetic number, because the mean of its divisors is an integer number (4861584).

Almost surely, 2^161427660 is an apocalyptic number.

161427660 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 161427660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233356032).

161427660 is an abundant number, since it is smaller than the sum of its proper divisors (305284404).

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

161427660 is a wasteful number, since it uses less digits than its factorization.

161427660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575 (or 573 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 161427660 is about 12705.4185291158. The cubic root of 161427660 is about 544.4934383540.

The spelling of 161427660 in words is "one hundred sixty-one million, four hundred twenty-seven thousand, six hundred sixty".