816998 has 24 divisors (see below), whose sum is σ = 1531152. Its totient is φ = 318384.

The previous prime is 816971. The next prime is 817013. The reversal of 816998 is 899618.

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12161 + ... + 12227.

It is an arithmetic number, because the mean of its divisors is an integer number (63798).

2⁸¹⁶⁹⁹⁸ is an apocalyptic number.

816998 is a deficient number, since it is larger than the sum of its proper divisors (714154).

816998 is a wasteful number, since it uses less digits than its factorization.

816998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156 (or 89 counting only the distinct ones).

The product of its digits is 31104, while the sum is 41.

The square root of 816998 is about 903.8794167365. The cubic root of 816998 is about 93.4846553217.

The spelling of 816998 in words is "eight hundred sixteen thousand, nine hundred ninety-eight".