71066398 has 16 divisors (see below), whose sum is σ = 115302096. Its totient is φ = 32656320.

The previous prime is 71066357. The next prime is 71066419. The reversal of 71066398 is 89366017.

It is a self number, because there is not a number n which added to its sum of digits gives 71066398.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193 + ... + 11923.

It is an arithmetic number, because the mean of its divisors is an integer number (7206381).

Almost surely, 2^71066398 is an apocalyptic number.

71066398 is a deficient number, since it is larger than the sum of its proper divisors (44235698).

71066398 is a wasteful number, since it uses less digits than its factorization.

71066398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11979.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 71066398 is about 8430.0888488794. The cubic root of 71066398 is about 414.2108154843.

The spelling of 71066398 in words is "seventy-one million, sixty-six thousand, three hundred ninety-eight".