161968 has 20 divisors (see below), whose sum is σ = 321408. Its totient is φ = 79040.

The previous prime is 161957. The next prime is 161969. The reversal of 161968 is 869161.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (161969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 753 + ... + 943.

2¹⁶¹⁹⁶⁸ is an apocalyptic number.

It is an amenable number.

161968 is a deficient number, since it is larger than the sum of its proper divisors (159440).

161968 is a wasteful number, since it uses less digits than its factorization.

161968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252 (or 246 counting only the distinct ones).

The product of its digits is 2592, while the sum is 31.

The square root of 161968 is about 402.4524816671. The cubic root of 161968 is about 54.5100281746.

The spelling of 161968 in words is "one hundred sixty-one thousand, nine hundred sixty-eight".