71871801 has 8 divisors (see below), whose sum is σ = 101466144. Its totient is φ = 45096000.

The previous prime is 71871781. The next prime is 71871817. The reversal of 71871801 is 10817817.

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

It is not a de Polignac number, because 71871801 - 2⁵ = 71871769 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (71871881) 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, 704575 + ... + 704676.

It is an arithmetic number, because the mean of its divisors is an integer number (12683268).

Almost surely, 2^71871801 is an apocalyptic number.

It is an amenable number.

71871801 is a deficient number, since it is larger than the sum of its proper divisors (29594343).

71871801 is a wasteful number, since it uses less digits than its factorization.

71871801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1409271.

The product of its (nonzero) digits is 3136, while the sum is 33.

The square root of 71871801 is about 8477.7238100802. The cubic root of 71871801 is about 415.7697061919.

The spelling of 71871801 in words is "seventy-one million, eight hundred seventy-one thousand, eight hundred one".