996778 has 16 divisors (see below), whose sum is σ = 1667520. Its totient is φ = 444096.

The previous prime is 996763. The next prime is 996781. The reversal of 996778 is 877699.

It is an unprimeable number.

996778 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126 + ... + 1417.

It is an arithmetic number, because the mean of its divisors is an integer number (104220).

2⁹⁹⁶⁷⁷⁸ is an apocalyptic number.

996778 is a deficient number, since it is larger than the sum of its proper divisors (670742).

996778 is a wasteful number, since it uses less digits than its factorization.

996778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1581.

The product of its digits is 190512, while the sum is 46.

The square root of 996778 is about 998.3877002447. The cubic root of 996778 is about 99.8924844455.

The spelling of 996778 in words is "nine hundred ninety-six thousand, seven hundred seventy-eight".