71344405 has 8 divisors (see below), whose sum is σ = 93396384. Its totient is φ = 51886800.

The previous prime is 71344381. The next prime is 71344451. The reversal of 71344405 is 50444317.

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

It is not a de Polignac number, because 71344405 - 2⁷ = 71344277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 648531 + ... + 648640.

It is an arithmetic number, because the mean of its divisors is an integer number (11674548).

Almost surely, 2^71344405 is an apocalyptic number.

It is an amenable number.

71344405 is a deficient number, since it is larger than the sum of its proper divisors (22051979).

71344405 is a wasteful number, since it uses less digits than its factorization.

71344405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1297187.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 71344405 is about 8446.5617265252. The cubic root of 71344405 is about 414.7502343812.

The spelling of 71344405 in words is "seventy-one million, three hundred forty-four thousand, four hundred five".