71181374 has 16 divisors (see below), whose sum is σ = 116764416. Its totient is φ = 32275800.

The previous prime is 71181373. The next prime is 71181379. The reversal of 71181374 is 47318117.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 71181374.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71181373) by changing a digit.

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, 5729 + ... + 13235.

It is an arithmetic number, because the mean of its divisors is an integer number (7297776).

Almost surely, 2^71181374 is an apocalyptic number.

71181374 is a deficient number, since it is larger than the sum of its proper divisors (45583042).

71181374 is a wasteful number, since it uses less digits than its factorization.

71181374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7951.

The product of its digits is 4704, while the sum is 32.

The square root of 71181374 is about 8436.9054753505. The cubic root of 71181374 is about 414.4340745014.

The spelling of 71181374 in words is "seventy-one million, one hundred eighty-one thousand, three hundred seventy-four".