161008704 has 84 divisors (see below), whose sum is σ = 465053680. Its totient is φ = 53256960.

The previous prime is 161008703. The next prime is 161008721. The reversal of 161008704 is 407800161.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (161008703) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79059 + ... + 81069.

Almost surely, 2^161008704 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 161008704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232526840).

161008704 is an abundant number, since it is smaller than the sum of its proper divisors (304044976).

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

161008704 is a wasteful number, since it uses less digits than its factorization.

161008704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2168 (or 2155 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 161008704 is about 12688.9205214628. The cubic root of 161008704 is about 544.0219858473.

Adding to 161008704 its reverse (407800161), we get a palindrome (568808865).

The spelling of 161008704 in words is "one hundred sixty-one million, eight thousand, seven hundred four".