161332608 has 64 divisors (see below), whose sum is σ = 432806400. Its totient is φ = 53242368.

The previous prime is 161332547. The next prime is 161332627. The reversal of 161332608 is 806233161.

161332608 is digitally balanced in base 2 and base 3, because in such bases 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 a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37513 + ... + 41591.

It is an arithmetic number, because the mean of its divisors is an integer number (6762600).

Almost surely, 2^161332608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161332608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216403200).

161332608 is an abundant number, since it is smaller than the sum of its proper divisors (271473792).

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

161332608 is a wasteful number, since it uses less digits than its factorization.

161332608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4199 (or 4187 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 161332608 is about 12701.6773695445. The cubic root of 161332608 is about 544.3865476435.

Adding to 161332608 its reverse (806233161), we get a palindrome (967565769).

The spelling of 161332608 in words is "one hundred sixty-one million, three hundred thirty-two thousand, six hundred eight".