161704844 has 24 divisors (see below), whose sum is σ = 324592800. Its totient is φ = 69048576.

The previous prime is 161704831. The next prime is 161704847. The reversal of 161704844 is 448407161.

161704844 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161704844² = 52296913146128672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161704847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2669 + ... + 18180.

It is an arithmetic number, because the mean of its divisors is an integer number (13524700).

Almost surely, 2^161704844 is an apocalyptic number.

161704844 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

161704844 is an abundant number, since it is smaller than the sum of its proper divisors (162887956).

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

161704844 is a wasteful number, since it uses less digits than its factorization.

161704844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21137 (or 21135 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 161704844 is about 12716.3219525144. The cubic root of 161704844 is about 544.8049061827.

The spelling of 161704844 in words is "one hundred sixty-one million, seven hundred four thousand, eight hundred forty-four".