996178 has 4 divisors (see below), whose sum is σ = 1494270. Its totient is φ = 498088.

The previous prime is 996173. The next prime is 996187. The reversal of 996178 is 871699.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 871699 = 503 ⋅1733.

It can be written as a sum of positive squares in only one way, i.e., 889249 + 106929 = 943^2 + 327^2 .

It is a super-3 number, since 3×996178³ = 2965733301664295256, which contains 333 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 996178.

It is not an unprimeable number, because it can be changed into a prime (996173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249043 + ... + 249046.

2⁹⁹⁶¹⁷⁸ is an apocalyptic number.

996178 is the 534-th centered heptagonal number.

996178 is a deficient number, since it is larger than the sum of its proper divisors (498092).

996178 is a wasteful number, since it uses less digits than its factorization.

996178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498091.

The product of its digits is 27216, while the sum is 40.

The square root of 996178 is about 998.0871705417. The cubic root of 996178 is about 99.8724373469.

The spelling of 996178 in words is "nine hundred ninety-six thousand, one hundred seventy-eight".