72799 has 4 divisors (see below), whose sum is σ = 74536. Its totient is φ = 71064.

The previous prime is 72797. The next prime is 72817. The reversal of 72799 is 99727.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99727 = 31 ⋅3217.

It is a cyclic number.

It is not a de Polignac number, because 72799 - 2¹ = 72797 is a prime.

It is an Ulam number.

It is a Duffinian number.

72799 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72797) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 804 + ... + 889.

It is an arithmetic number, because the mean of its divisors is an integer number (18634).

2⁷²⁷⁹⁹ is an apocalyptic number.

72799 is a deficient number, since it is larger than the sum of its proper divisors (1737).

72799 is a wasteful number, since it uses less digits than its factorization.

72799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1736.

The product of its digits is 7938, while the sum is 34.

The square root of 72799 is about 269.8128981350. The cubic root of 72799 is about 41.7549983856.

The spelling of 72799 in words is "seventy-two thousand, seven hundred ninety-nine".