71148813 has 8 divisors (see below), whose sum is σ = 97925376. Its totient is φ = 45902400.

The previous prime is 71148811. The next prime is 71148823. The reversal of 71148813 is 31884117.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71148813 - 2¹ = 71148811 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71148811) 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, 382428 + ... + 382613.

It is an arithmetic number, because the mean of its divisors is an integer number (12240672).

Almost surely, 2^71148813 is an apocalyptic number.

It is an amenable number.

71148813 is a deficient number, since it is larger than the sum of its proper divisors (26776563).

71148813 is a wasteful number, since it uses less digits than its factorization.

71148813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765075.

The product of its digits is 5376, while the sum is 33.

The square root of 71148813 is about 8434.9755779137. The cubic root of 71148813 is about 414.3708723589.

The spelling of 71148813 in words is "seventy-one million, one hundred forty-eight thousand, eight hundred thirteen".