71261871 has 8 divisors (see below), whose sum is σ = 96218880. Its totient is φ = 46906392.

The previous prime is 71261867. The next prime is 71261887. The reversal of 71261871 is 17816217.

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

It is not a de Polignac number, because 71261871 - 2² = 71261867 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71261821) 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, 150105 + ... + 150578.

It is an arithmetic number, because the mean of its divisors is an integer number (12027360).

Almost surely, 2^71261871 is an apocalyptic number.

71261871 is a deficient number, since it is larger than the sum of its proper divisors (24957009).

71261871 is a wasteful number, since it uses less digits than its factorization.

71261871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300765.

The product of its digits is 4704, while the sum is 33.

The square root of 71261871 is about 8441.6746561331. The cubic root of 71261871 is about 414.5902395680.

The spelling of 71261871 in words is "seventy-one million, two hundred sixty-one thousand, eight hundred seventy-one".