76999 has 4 divisors (see below), whose sum is σ = 82936. Its totient is φ = 71064.

The previous prime is 76991. The next prime is 77003. The reversal of 76999 is 99967.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99967 = 7 ⋅14281.

It is a cyclic number.

It is not a de Polignac number, because 76999 - 2³ = 76991 is a prime.

It is a Duffinian number.

76999 is a modest number, since divided by 999 gives 76 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76991) 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, 2949 + ... + 2974.

It is an arithmetic number, because the mean of its divisors is an integer number (20734).

2⁷⁶⁹⁹⁹ is an apocalyptic number.

76999 is a deficient number, since it is larger than the sum of its proper divisors (5937).

76999 is a wasteful number, since it uses less digits than its factorization.

76999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5936.

The product of its digits is 30618, while the sum is 40.

The square root of 76999 is about 277.4869366295. The cubic root of 76999 is about 42.5430244806.

It can be divided in two parts, 769 and 99, that added together give a palindrome (868).

The spelling of 76999 in words is "seventy-six thousand, nine hundred ninety-nine".