71716505 has 8 divisors (see below), whose sum is σ = 98354112. Its totient is φ = 49177008.

The previous prime is 71716499. The next prime is 71716543. The reversal of 71716505 is 50561717.

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

It is a cyclic number.

It is not a de Polignac number, because 71716505 - 2²⁶ = 4607641 is a prime.

It is a Duffinian 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, 1024487 + ... + 1024556.

It is an arithmetic number, because the mean of its divisors is an integer number (12294264).

Almost surely, 2^71716505 is an apocalyptic number.

It is an amenable number.

71716505 is a deficient number, since it is larger than the sum of its proper divisors (26637607).

71716505 is a wasteful number, since it uses less digits than its factorization.

71716505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2049055.

The product of its (nonzero) digits is 7350, while the sum is 32.

The square root of 71716505 is about 8468.5597949120. The cubic root of 71716505 is about 415.4700340365.

The spelling of 71716505 in words is "seventy-one million, seven hundred sixteen thousand, five hundred five".