81060164 has 12 divisors (see below), whose sum is σ = 146431488. Its totient is φ = 39222600.

The previous prime is 81060143. The next prime is 81060167. The reversal of 81060164 is 46106018.

It is not an unprimeable number, because it can be changed into a prime (81060167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326732 + ... + 326979.

It is an arithmetic number, because the mean of its divisors is an integer number (12202624).

Almost surely, 2^81060164 is an apocalyptic number.

It is an amenable number.

81060164 is a deficient number, since it is larger than the sum of its proper divisors (65371324).

81060164 is a wasteful number, since it uses less digits than its factorization.

81060164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653746 (or 653744 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 81060164 is about 9003.3418240118. The cubic root of 81060164 is about 432.7819698927.

The spelling of 81060164 in words is "eighty-one million, sixty thousand, one hundred sixty-four".