71738871 has 8 divisors (see below), whose sum is σ = 96405504. Its totient is φ = 47449080.

The previous prime is 71738869. The next prime is 71738911. The reversal of 71738871 is 17883717.

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

It is not a de Polignac number, because 71738871 - 2¹ = 71738869 is a prime.

It is a super-2 number, since 2×71738871² = 10292931224709282, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71738801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93765 + ... + 94526.

It is an arithmetic number, because the mean of its divisors is an integer number (12050688).

Almost surely, 2^71738871 is an apocalyptic number.

71738871 is a deficient number, since it is larger than the sum of its proper divisors (24666633).

71738871 is a wasteful number, since it uses less digits than its factorization.

71738871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188421.

The product of its digits is 65856, while the sum is 42.

The square root of 71738871 is about 8469.8802234742. The cubic root of 71738871 is about 415.5132199900.

The spelling of 71738871 in words is "seventy-one million, seven hundred thirty-eight thousand, eight hundred seventy-one".