81076676 has 6 divisors (see below), whose sum is σ = 141884190. Its totient is φ = 40538336.

The previous prime is 81076661. The next prime is 81076693. The reversal of 81076676 is 67667018.

It can be written as a sum of positive squares in only one way, i.e., 49984900 + 31091776 = 7070^2 + 5576^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10134581 + ... + 10134588.

It is an arithmetic number, because the mean of its divisors is an integer number (23647365).

Almost surely, 2^81076676 is an apocalyptic number.

It is an amenable number.

81076676 is a deficient number, since it is larger than the sum of its proper divisors (60807514).

81076676 is a wasteful number, since it uses less digits than its factorization.

81076676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20269173 (or 20269171 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 81076676 is about 9004.2587701598. The cubic root of 81076676 is about 432.8113538727.

The spelling of 81076676 in words is "eighty-one million, seventy-six thousand, six hundred seventy-six".