81067826 has 16 divisors (see below), whose sum is σ = 139454784. Its totient is φ = 34623024.

The previous prime is 81067817. The next prime is 81067837. The reversal of 81067826 is 62876018.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 81067826.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5780 + ... + 13983.

It is an arithmetic number, because the mean of its divisors is an integer number (8715924).

Almost surely, 2^81067826 is an apocalyptic number.

81067826 is a deficient number, since it is larger than the sum of its proper divisors (58386958).

81067826 is a wasteful number, since it uses less digits than its factorization.

81067826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20065.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 81067826 is about 9003.7673226267. The cubic root of 81067826 is about 432.7956053244.

The spelling of 81067826 in words is "eighty-one million, sixty-seven thousand, eight hundred twenty-six".