160705640 has 32 divisors (see below), whose sum is σ = 362287080. Its totient is φ = 64157952.

The previous prime is 160705639. The next prime is 160705661. The reversal of 160705640 is 46507061.

It can be written as a sum of positive squares in 4 ways, for example, as 120077764 + 40627876 = 10958^2 + 6374^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 18674 + ... + 25886.

Almost surely, 2^160705640 is an apocalyptic number.

160705640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

160705640 is an abundant number, since it is smaller than the sum of its proper divisors (201581440).

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

160705640 is a wasteful number, since it uses less digits than its factorization.

160705640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7781 (or 7777 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 160705640 is about 12676.9728247717. The cubic root of 160705640 is about 543.6804369547.

The spelling of 160705640 in words is "one hundred sixty million, seven hundred five thousand, six hundred forty".