71403671 has 4 divisors (see below), whose sum is σ = 71463000. Its totient is φ = 71344344.

The previous prime is 71403643. The next prime is 71403677. The reversal of 71403671 is 17630417.

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

It is a cyclic number.

It is not a de Polignac number, because 71403671 - 2¹⁰ = 71402647 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 (71403677) 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, 27821 + ... + 30278.

It is an arithmetic number, because the mean of its divisors is an integer number (17865750).

Almost surely, 2^71403671 is an apocalyptic number.

71403671 is a deficient number, since it is larger than the sum of its proper divisors (59329).

71403671 is a wasteful number, since it uses less digits than its factorization.

71403671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59328.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 71403671 is about 8450.0692896567. The cubic root of 71403671 is about 414.8650473281.

The spelling of 71403671 in words is "seventy-one million, four hundred three thousand, six hundred seventy-one".