81466683 has 8 divisors (see below), whose sum is σ = 108688896. Its totient is φ = 54277800.

The previous prime is 81466681. The next prime is 81466691. The reversal of 81466683 is 38666418.

It is a happy number.

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

It is not a de Polignac number, because 81466683 - 2¹ = 81466681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (81466681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1923 + ... + 12908.

It is an arithmetic number, because the mean of its divisors is an integer number (13586112).

Almost surely, 2^81466683 is an apocalyptic number.

81466683 is a deficient number, since it is larger than the sum of its proper divisors (27222213).

81466683 is a wasteful number, since it uses less digits than its factorization.

81466683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16665.

The product of its digits is 165888, while the sum is 42.

The square root of 81466683 is about 9025.8895960454. The cubic root of 81466683 is about 433.5042350878.

The spelling of 81466683 in words is "eighty-one million, four hundred sixty-six thousand, six hundred eighty-three".