81673314 has 16 divisors (see below), whose sum is σ = 164874528. Its totient is φ = 26969792.

The previous prime is 81673303. The next prime is 81673331. The reversal of 81673314 is 41337618.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 62967 + ... + 64250.

It is an arithmetic number, because the mean of its divisors is an integer number (10304658).

Almost surely, 2^81673314 is an apocalyptic number.

81673314 is an abundant number, since it is smaller than the sum of its proper divisors (83201214).

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

81673314 is a wasteful number, since it uses less digits than its factorization.

81673314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127329.

The product of its digits is 12096, while the sum is 33.

The square root of 81673314 is about 9037.3289195425. The cubic root of 81673314 is about 433.8704370909.

The spelling of 81673314 in words is "eighty-one million, six hundred seventy-three thousand, three hundred fourteen".