81676086 has 8 divisors (see below), whose sum is σ = 163352184. Its totient is φ = 27225360.

The previous prime is 81676031. The next prime is 81676087. The reversal of 81676086 is 68067618.

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

81676086 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81676087) 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, 6806335 + ... + 6806346.

It is an arithmetic number, because the mean of its divisors is an integer number (20419023).

Almost surely, 2^81676086 is an apocalyptic number.

81676086 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.

81676086 is a wasteful number, since it uses less digits than its factorization.

81676086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13612686.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 81676086 is about 9037.4822821403. The cubic root of 81676086 is about 433.8753455699.

The spelling of 81676086 in words is "eighty-one million, six hundred seventy-six thousand, eighty-six".