77996 has 24 divisors (see below), whose sum is σ = 153216. Its totient is φ = 34560.

The previous prime is 77983. The next prime is 77999. The reversal of 77996 is 69977.

It is not an unprimeable number, because it can be changed into a prime (77999) by changing a digit.

77996 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2090 + ... + 2126.

It is an arithmetic number, because the mean of its divisors is an integer number (6384).

2⁷⁷⁹⁹⁶ is an apocalyptic number.

It is an amenable number.

77996 is a deficient number, since it is larger than the sum of its proper divisors (75220).

77996 is a wasteful number, since it uses less digits than its factorization.

77996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89 (or 87 counting only the distinct ones).

The product of its digits is 23814, while the sum is 38.

The square root of 77996 is about 279.2776396348. The cubic root of 77996 is about 42.7258564355.

The spelling of 77996 in words is "seventy-seven thousand, nine hundred ninety-six".