72001711 has 4 divisors (see below), whose sum is σ = 72019624. Its totient is φ = 71983800.

The previous prime is 72001703. The next prime is 72001723. The reversal of 72001711 is 11710027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11710027 = 7 ⋅1672861.

It is a cyclic number.

It is not a de Polignac number, because 72001711 - 2³ = 72001703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72071711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181 + ... + 12001.

It is an arithmetic number, because the mean of its divisors is an integer number (18004906).

Almost surely, 2^72001711 is an apocalyptic number.

72001711 is a deficient number, since it is larger than the sum of its proper divisors (17913).

72001711 is a wasteful number, since it uses less digits than its factorization.

72001711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17912.

The product of its (nonzero) digits is 98, while the sum is 19.

The square root of 72001711 is about 8485.3821952815. The cubic root of 72001711 is about 416.0200599763.

Adding to 72001711 its reverse (11710027), we get a palindrome (83711738).

It can be divided in two parts, 7200 and 1711, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 72001711 in words is "seventy-two million, one thousand, seven hundred eleven".