81374883 has 8 divisors (see below), whose sum is σ = 108637200. Its totient is φ = 54181248.

The previous prime is 81374879. The next prime is 81374911. The reversal of 81374883 is 38847318.

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

It is not a de Polignac number, because 81374883 - 2² = 81374879 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (81374833) 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, 14338 + ... + 19191.

It is an arithmetic number, because the mean of its divisors is an integer number (13579650).

Almost surely, 2^81374883 is an apocalyptic number.

81374883 is a deficient number, since it is larger than the sum of its proper divisors (27262317).

81374883 is a wasteful number, since it uses less digits than its factorization.

81374883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34341.

The product of its digits is 129024, while the sum is 42.

The square root of 81374883 is about 9020.8027913263. The cubic root of 81374883 is about 433.3413437704.

The spelling of 81374883 in words is "eighty-one million, three hundred seventy-four thousand, eight hundred eighty-three".