81962 has 8 divisors (see below), whose sum is σ = 124416. Its totient is φ = 40492.

The previous prime is 81953. The next prime is 81967. The reversal of 81962 is 26918.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a zygodrome in base 4.

It is not an unprimeable number, because it can be changed into a prime (81967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23 + ... + 405.

It is an arithmetic number, because the mean of its divisors is an integer number (15552).

2⁸¹⁹⁶² is an apocalyptic number.

81962 is a deficient number, since it is larger than the sum of its proper divisors (42454).

81962 is a wasteful number, since it uses less digits than its factorization.

81962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492.

The product of its digits is 864, while the sum is 26.

The square root of 81962 is about 286.2900626987. The cubic root of 81962 is about 43.4381028331.

The spelling of 81962 in words is "eighty-one thousand, nine hundred sixty-two".