81713002 has 16 divisors (see below), whose sum is σ = 141769152. Its totient is φ = 34597440.

The previous prime is 81712991. The next prime is 81713063. The reversal of 81713002 is 20031718.

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, 33999 + ... + 36322.

It is an arithmetic number, because the mean of its divisors is an integer number (8860572).

Almost surely, 2^81713002 is an apocalyptic number.

81713002 is a deficient number, since it is larger than the sum of its proper divisors (60056150).

81713002 is a wasteful number, since it uses less digits than its factorization.

81713002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70413.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 81713002 is about 9039.5244343937. The cubic root of 81713002 is about 433.9407034592.

The spelling of 81713002 in words is "eighty-one million, seven hundred thirteen thousand, two".