81460568 has 32 divisors (see below), whose sum is σ = 175253760. Its totient is φ = 34772640.

The previous prime is 81460517. The next prime is 81460571. The reversal of 81460568 is 86506418.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent 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, 11963 + ... + 17493.

It is an arithmetic number, because the mean of its divisors is an integer number (5476680).

Almost surely, 2^81460568 is an apocalyptic number.

It is an amenable number.

81460568 is an abundant number, since it is smaller than the sum of its proper divisors (93793192).

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

81460568 is a wasteful number, since it uses less digits than its factorization.

81460568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5807 (or 5803 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 81460568 is about 9025.5508419154. The cubic root of 81460568 is about 433.4933883439.

It can be divided in two parts, 81460 and 568, that added together give a palindrome (82028).

The spelling of 81460568 in words is "eighty-one million, four hundred sixty thousand, five hundred sixty-eight".