72722711 has 4 divisors (see below), whose sum is σ = 75884592. Its totient is φ = 69560832.

The previous prime is 72722707. The next prime is 72722737. The reversal of 72722711 is 11722727.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11722727 = 1567 ⋅7481.

It is not a de Polignac number, because 72722711 - 2² = 72722707 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 (72722411) 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, 1580906 + ... + 1580951.

It is an arithmetic number, because the mean of its divisors is an integer number (18971148).

Almost surely, 2^72722711 is an apocalyptic number.

72722711 is a deficient number, since it is larger than the sum of its proper divisors (3161881).

72722711 is a wasteful number, since it uses less digits than its factorization.

72722711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3161880.

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

The square root of 72722711 is about 8527.7611950617. The cubic root of 72722711 is about 417.4040770700.

The spelling of 72722711 in words is "seventy-two million, seven hundred twenty-two thousand, seven hundred eleven".