81062223 has 8 divisors (see below), whose sum is σ = 117908736. Its totient is φ = 49128600.

The previous prime is 81062213. The next prime is 81062243. The reversal of 81062223 is 32226018.

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

It is not a de Polignac number, because 81062223 - 2¹⁰ = 81061199 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 81062193 and 81062202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81062213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1228183 + ... + 1228248.

It is an arithmetic number, because the mean of its divisors is an integer number (14738592).

Almost surely, 2^81062223 is an apocalyptic number.

81062223 is a deficient number, since it is larger than the sum of its proper divisors (36846513).

81062223 is a wasteful number, since it uses less digits than its factorization.

81062223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2456445.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 81062223 is about 9003.4561697162. The cubic root of 81062223 is about 432.7856342102.

The spelling of 81062223 in words is "eighty-one million, sixty-two thousand, two hundred twenty-three".