81156676 has 12 divisors (see below), whose sum is σ = 149499280. Its totient is φ = 38442600.

The previous prime is 81156637. The next prime is 81156701. The reversal of 81156676 is 67665118.

81156676 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

81156676 is strictly pandigital in base 9.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 533850 + ... + 534001.

Almost surely, 2^81156676 is an apocalyptic number.

It is an amenable number.

81156676 is a deficient number, since it is larger than the sum of its proper divisors (68342604).

81156676 is a wasteful number, since it uses less digits than its factorization.

81156676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067874 (or 1067872 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The square root of 81156676 is about 9008.7000172056. The cubic root of 81156676 is about 432.9536616563.

The spelling of 81156676 in words is "eighty-one million, one hundred fifty-six thousand, six hundred seventy-six".