160072681 has 2 divisors, whose sum is σ = 160072682. Its totient is φ = 160072680.

The previous prime is 160072643. The next prime is 160072687. The reversal of 160072681 is 186270061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117939600 + 42133081 = 10860^2 + 6491^2 .

It is an emirp because it is prime and its reverse (186270061) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 160072681 - 2¹⁹ = 159548393 is a prime.

It is a super-2 number, since 2×160072681² = 51246526405055522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (160072687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80036340 + 80036341.

It is an arithmetic number, because the mean of its divisors is an integer number (80036341).

Almost surely, 2^160072681 is an apocalyptic number.

It is an amenable number.

160072681 is a deficient number, since it is larger than the sum of its proper divisors (1).

160072681 is an equidigital number, since it uses as much as digits as its factorization.

160072681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 160072681 is about 12651.9832832643. The cubic root of 160072681 is about 542.9657136196.

The spelling of 160072681 in words is "one hundred sixty million, seventy-two thousand, six hundred eighty-one".