81067794 has 16 divisors (see below), whose sum is σ = 170669280. Its totient is φ = 25600320.

The previous prime is 81067787. The next prime is 81067807. The reversal of 81067794 is 49776018.

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, 355447 + ... + 355674.

It is an arithmetic number, because the mean of its divisors is an integer number (10666830).

Almost surely, 2^81067794 is an apocalyptic number.

81067794 is an abundant number, since it is smaller than the sum of its proper divisors (89601486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

81067794 is a wasteful number, since it uses less digits than its factorization.

81067794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711145.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 81067794 is about 9003.7655455926. The cubic root of 81067794 is about 432.7955483784.

The spelling of 81067794 in words is "eighty-one million, sixty-seven thousand, seven hundred ninety-four".