71968398 has 16 divisors (see below), whose sum is σ = 144167040. Its totient is φ = 23951096.

The previous prime is 71968363. The next prime is 71968399. The reversal of 71968398 is 89386917.

It is a self number, because there is not a number n which added to its sum of digits gives 71968398.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71968399) 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 7 ways as a sum of consecutive naturals, for example, 5388 + ... + 13151.

It is an arithmetic number, because the mean of its divisors is an integer number (9010440).

Almost surely, 2^71968398 is an apocalyptic number.

71968398 is an abundant number, since it is smaller than the sum of its proper divisors (72198642).

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

71968398 is a wasteful number, since it uses less digits than its factorization.

71968398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19191.

The product of its digits is 653184, while the sum is 51.

The square root of 71968398 is about 8483.4190041516. The cubic root of 71968398 is about 415.9558901394.

The spelling of 71968398 in words is "seventy-one million, nine hundred sixty-eight thousand, three hundred ninety-eight".