71469871 has 4 divisors (see below), whose sum is σ = 77967144. Its totient is φ = 64972600.

The previous prime is 71469823. The next prime is 71469941. The reversal of 71469871 is 17896417.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 71469871 - 2¹⁹ = 70945583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71469271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3248620 + ... + 3248641.

It is an arithmetic number, because the mean of its divisors is an integer number (19491786).

Almost surely, 2^71469871 is an apocalyptic number.

71469871 is a deficient number, since it is larger than the sum of its proper divisors (6497273).

71469871 is a wasteful number, since it uses less digits than its factorization.

71469871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6497272.

The product of its digits is 84672, while the sum is 43.

The square root of 71469871 is about 8453.9855098054. The cubic root of 71469871 is about 414.9932180631.

The spelling of 71469871 in words is "seventy-one million, four hundred sixty-nine thousand, eight hundred seventy-one".