81067395 has 16 divisors (see below), whose sum is σ = 136535040. Its totient is φ = 40960224.

The previous prime is 81067391. The next prime is 81067403. The reversal of 81067395 is 59376018.

It is not a de Polignac number, because 81067395 - 2² = 81067391 is a prime.

It is not an unprimeable number, because it can be changed into a prime (81067391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141939 + ... + 142508.

It is an arithmetic number, because the mean of its divisors is an integer number (8533440).

Almost surely, 2^81067395 is an apocalyptic number.

81067395 is a deficient number, since it is larger than the sum of its proper divisors (55467645).

81067395 is a wasteful number, since it uses less digits than its factorization.

81067395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284474.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 81067395 is about 9003.7433881692. The cubic root of 81067395 is about 432.7948383319.

The spelling of 81067395 in words is "eighty-one million, sixty-seven thousand, three hundred ninety-five".