71722719 has 16 divisors (see below), whose sum is σ = 107714400. Its totient is φ = 47158848.

The previous prime is 71722691. The next prime is 71722723. The reversal of 71722719 is 91722717.

It is not a de Polignac number, because 71722719 - 2¹⁵ = 71689951 is a prime.

It is a super-2 number, since 2×71722719² = 10288296841505922, which contains 22 as substring.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71722769) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16224 + ... + 20165.

It is an arithmetic number, because the mean of its divisors is an integer number (6732150).

Almost surely, 2^71722719 is an apocalyptic number.

71722719 is a deficient number, since it is larger than the sum of its proper divisors (35991681).

71722719 is a wasteful number, since it uses less digits than its factorization.

71722719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36471 (or 36465 counting only the distinct ones).

The product of its digits is 12348, while the sum is 36.

The square root of 71722719 is about 8468.9266734339. The cubic root of 71722719 is about 415.4820333953.

It can be divided in two parts, 717 and 22719, that added together give a triangular number (23436 = T₂₁₆).

The spelling of 71722719 in words is "seventy-one million, seven hundred twenty-two thousand, seven hundred nineteen".