81346 has 8 divisors (see below), whose sum is σ = 123660. Its totient is φ = 40128.

The previous prime is 81343. The next prime is 81349. The reversal of 81346 is 64318.

It is an interprime number because it is at equal distance from previous prime (81343) and next prime (81349).

It can be written as a sum of positive squares in 2 ways, for example, as 81225 + 121 = 285^2 + 11^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81343) 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, 51 + ... + 406.

2⁸¹³⁴⁶ is an apocalyptic number.

81346 is a deficient number, since it is larger than the sum of its proper divisors (42314).

81346 is a wasteful number, since it uses less digits than its factorization.

81346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548.

The product of its digits is 576, while the sum is 22.

The square root of 81346 is about 285.2122017025. The cubic root of 81346 is about 43.3290068001.

The spelling of 81346 in words is "eighty-one thousand, three hundred forty-six".