997846 has 4 divisors (see below), whose sum is σ = 1496772. Its totient is φ = 498922.

The previous prime is 997813. The next prime is 997877. The reversal of 997846 is 648799.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 648799 = 31 ⋅20929.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249460 + ... + 249463.

It is an arithmetic number, because the mean of its divisors is an integer number (374193).

2⁹⁹⁷⁸⁴⁶ is an apocalyptic number.

997846 is a deficient number, since it is larger than the sum of its proper divisors (498926).

997846 is a wasteful number, since it uses less digits than its factorization.

997846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498925.

The product of its digits is 108864, while the sum is 43.

The square root of 997846 is about 998.9224194100. The cubic root of 997846 is about 99.9281483858.

The spelling of 997846 in words is "nine hundred ninety-seven thousand, eight hundred forty-six".