160899720 has 128 divisors (see below), whose sum is σ = 509725440. Its totient is φ = 40550400.

The previous prime is 160899719. The next prime is 160899721. The reversal of 160899720 is 27998061.

It is an interprime number because it is at equal distance from previous prime (160899719) and next prime (160899721).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (160899721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 267420 + ... + 268020.

It is an arithmetic number, because the mean of its divisors is an integer number (3982230).

Almost surely, 2^160899720 is an apocalyptic number.

160899720 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 160899720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254862720).

160899720 is an abundant number, since it is smaller than the sum of its proper divisors (348825720).

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

160899720 is a wasteful number, since it uses less digits than its factorization.

160899720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735 (or 731 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 160899720 is about 12684.6253393626. The cubic root of 160899720 is about 543.8992117921.

The spelling of 160899720 in words is "one hundred sixty million, eight hundred ninety-nine thousand, seven hundred twenty".