996978 has 16 divisors (see below), whose sum is σ = 2017440. Its totient is φ = 328416.

The previous prime is 996973. The next prime is 996979. The reversal of 996978 is 879699.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (996973) by changing a digit.

996978 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, 400 + ... + 1467.

It is an arithmetic number, because the mean of its divisors is an integer number (126090).

2⁹⁹⁶⁹⁷⁸ is an apocalyptic number.

996978 is an abundant number, since it is smaller than the sum of its proper divisors (1020462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

996978 is a wasteful number, since it uses less digits than its factorization.

996978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1961.

The product of its digits is 244944, while the sum is 48.

The square root of 996978 is about 998.4878567113. The cubic root of 996978 is about 99.8991650239.

The spelling of 996978 in words is "nine hundred ninety-six thousand, nine hundred seventy-eight".