81341682 has 8 divisors (see below), whose sum is σ = 162683376. Its totient is φ = 27113892.

The previous prime is 81341671. The next prime is 81341683. The reversal of 81341682 is 28614318.

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

81341682 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (81341683) 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, 6778468 + ... + 6778479.

It is an arithmetic number, because the mean of its divisors is an integer number (20335422).

Almost surely, 2^81341682 is an apocalyptic number.

81341682 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

81341682 is a wasteful number, since it uses less digits than its factorization.

81341682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13556952.

The product of its digits is 9216, while the sum is 33.

The square root of 81341682 is about 9018.9623571673. The cubic root of 81341682 is about 433.2824012460.

The spelling of 81341682 in words is "eighty-one million, three hundred forty-one thousand, six hundred eighty-two".