71712407 has 8 divisors (see below), whose sum is σ = 77305536. Its totient is φ = 66130272.

The previous prime is 71712383. The next prime is 71712449. The reversal of 71712407 is 70421717.

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

It is not a de Polignac number, because 71712407 - 2¹⁰ = 71711383 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71712407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71712497) 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, 15173 + ... + 19329.

It is an arithmetic number, because the mean of its divisors is an integer number (9663192).

Almost surely, 2^71712407 is an apocalyptic number.

71712407 is a deficient number, since it is larger than the sum of its proper divisors (5593129).

71712407 is a wasteful number, since it uses less digits than its factorization.

71712407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5497.

The product of its (nonzero) digits is 2744, while the sum is 29.

The square root of 71712407 is about 8468.3178376818. The cubic root of 71712407 is about 415.4621203369.

The spelling of 71712407 in words is "seventy-one million, seven hundred twelve thousand, four hundred seven".