81074 has 8 divisors (see below), whose sum is σ = 139008. Its totient is φ = 34740.

The previous prime is 81071. The next prime is 81077. The reversal of 81074 is 47018.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (81071) and next prime (81077).

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (81071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2882 + ... + 2909.

It is an arithmetic number, because the mean of its divisors is an integer number (17376).

2⁸¹⁰⁷⁴ is an apocalyptic number.

81074 is a deficient number, since it is larger than the sum of its proper divisors (57934).

81074 is a wasteful number, since it uses less digits than its factorization.

81074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5800.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 81074 is about 284.7349644845. The cubic root of 81074 is about 43.2806592060.

The spelling of 81074 in words is "eighty-one thousand, seventy-four".