71799 has 16 divisors (see below), whose sum is σ = 118272. Its totient is φ = 37728.

The previous prime is 71789. The next prime is 71807. The reversal of 71799 is 99717.

71799 = 65² + 66² + ... + 78².

It is not a de Polignac number, because 71799 - 2⁷ = 71671 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71719) 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, 142 + ... + 404.

It is an arithmetic number, because the mean of its divisors is an integer number (7392).

2⁷¹⁷⁹⁹ is an apocalyptic number.

71799 is a deficient number, since it is larger than the sum of its proper divisors (46473).

71799 is a wasteful number, since it uses less digits than its factorization.

71799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286.

The product of its digits is 3969, while the sum is 33.

The square root of 71799 is about 267.9533541496. The cubic root of 71799 is about 41.5629277096.

The spelling of 71799 in words is "seventy-one thousand, seven hundred ninety-nine".