81110474 has 8 divisors (see below), whose sum is σ = 122870628. Its totient is φ = 40153600.

The previous prime is 81110461. The next prime is 81110479. The reversal of 81110474 is 47401118.

It can be written as a sum of positive squares in 2 ways, for example, as 81090025 + 20449 = 9005^2 + 143^2 .

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

It is not an unprimeable number, because it can be changed into a prime (81110479) 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, 200567 + ... + 200970.

Almost surely, 2^81110474 is an apocalyptic number.

81110474 is a deficient number, since it is larger than the sum of its proper divisors (41760154).

81110474 is a wasteful number, since it uses less digits than its factorization.

81110474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401640.

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 81110474 is about 9006.1353531912. The cubic root of 81110474 is about 432.8714867686.

The spelling of 81110474 in words is "eighty-one million, one hundred ten thousand, four hundred seventy-four".