81713004 has 24 divisors (see below), whose sum is σ = 191374848. Its totient is φ = 27136080.

The previous prime is 81712991. The next prime is 81713063. The reversal of 81713004 is 40031718.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9312 + ... + 15815.

It is an arithmetic number, because the mean of its divisors is an integer number (7973952).

Almost surely, 2^81713004 is an apocalyptic number.

It is an amenable number.

81713004 is an abundant number, since it is smaller than the sum of its proper divisors (109661844).

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

81713004 is a wasteful number, since it uses less digits than its factorization.

81713004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25405 (or 25403 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 81713004 is about 9039.5245450189. The cubic root of 81713004 is about 433.9407069995.

It can be divided in two parts, 8171 and 3004, that added together give a triangular number (11175 = T₁₄₉).

The spelling of 81713004 in words is "eighty-one million, seven hundred thirteen thousand, four".