71722715 has 4 divisors (see below), whose sum is σ = 86067264. Its totient is φ = 57378168.

The previous prime is 71722691. The next prime is 71722723. The reversal of 71722715 is 51722717.

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 71722715 - 2²⁰ = 70674139 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7172267 + ... + 7172276.

It is an arithmetic number, because the mean of its divisors is an integer number (21516816).

Almost surely, 2^71722715 is an apocalyptic number.

71722715 is a deficient number, since it is larger than the sum of its proper divisors (14344549).

71722715 is a wasteful number, since it uses less digits than its factorization.

71722715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14344548.

The product of its digits is 6860, while the sum is 32.

The square root of 71722715 is about 8468.9264372765. The cubic root of 71722715 is about 415.4820256715.

It can be divided in two parts, 717 and 22715, that added together give a palindrome (23432).

The spelling of 71722715 in words is "seventy-one million, seven hundred twenty-two thousand, seven hundred fifteen".