160621 has 2 divisors, whose sum is σ = 160622. Its totient is φ = 160620.

The previous prime is 160619. The next prime is 160627. The reversal of 160621 is 126061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126025 + 34596 = 355^2 + 186^2 .

It is a cyclic number.

It is not a de Polignac number, because 160621 - 2¹ = 160619 is a prime.

Together with 160619, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 160595 and 160604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (160627) 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 as a sum of consecutive naturals, namely, 80310 + 80311.

It is an arithmetic number, because the mean of its divisors is an integer number (80311).

2¹⁶⁰⁶²¹ is an apocalyptic number.

It is an amenable number.

160621 is a deficient number, since it is larger than the sum of its proper divisors (1).

160621 is an equidigital number, since it uses as much as digits as its factorization.

160621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 160621 is about 400.7754982531. The cubic root of 160621 is about 54.3584972159.

Adding to 160621 its reverse (126061), we get a palindrome (286682).

The spelling of 160621 in words is "one hundred sixty thousand, six hundred twenty-one".