71408543 has 4 divisors (see below), whose sum is σ = 72755928. Its totient is φ = 70061160.

The previous prime is 71408539. The next prime is 71408569. The reversal of 71408543 is 34580417.

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 71408543 - 2² = 71408539 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 (71408573) 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, 673613 + ... + 673718.

It is an arithmetic number, because the mean of its divisors is an integer number (18188982).

Almost surely, 2^71408543 is an apocalyptic number.

71408543 is a deficient number, since it is larger than the sum of its proper divisors (1347385).

71408543 is a wasteful number, since it uses less digits than its factorization.

71408543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347384.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 71408543 is about 8450.3575663992. The cubic root of 71408543 is about 414.8744827745.

The spelling of 71408543 in words is "seventy-one million, four hundred eight thousand, five hundred forty-three".