160644736 has 64 divisors (see below), whose sum is σ = 373320000. Its totient is φ = 68828928.

The previous prime is 160644727. The next prime is 160644739. The reversal of 160644736 is 637446061.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 160644695 and 160644704.

It is not an unprimeable number, because it can be changed into a prime (160644739) 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, 42075 + ... + 45733.

It is an arithmetic number, because the mean of its divisors is an integer number (5833125).

Almost surely, 2^160644736 is an apocalyptic number.

160644736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

160644736 is the 7318-th octagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 160644736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186660000).

160644736 is an abundant number, since it is smaller than the sum of its proper divisors (212675264).

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

160644736 is an frugal number, since it uses more digits than its factorization.

160644736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3694 (or 3668 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 160644736 is about 12674.5704463702. The cubic root of 160644736 is about 543.6117471913.

Subtracting from 160644736 its product of nonzero digits (72576), we obtain a triangular number (160572160 = T₁₇₉₂₀).

The spelling of 160644736 in words is "one hundred sixty million, six hundred forty-four thousand, seven hundred thirty-six".