997676 has 6 divisors (see below), whose sum is σ = 1745940. Its totient is φ = 498836.

The previous prime is 997663. The next prime is 997681. The reversal of 997676 is 676799.

It is an unprimeable number.

997676 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 124706 + ... + 124713.

It is an arithmetic number, because the mean of its divisors is an integer number (290990).

2⁹⁹⁷⁶⁷⁶ is an apocalyptic number.

It is an amenable number.

997676 is a deficient number, since it is larger than the sum of its proper divisors (748264).

997676 is a wasteful number, since it uses less digits than its factorization.

997676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249423 (or 249421 counting only the distinct ones).

The product of its digits is 142884, while the sum is 44.

The square root of 997676 is about 998.8373240924. The cubic root of 997676 is about 99.9224732449.

The spelling of 997676 in words is "nine hundred ninety-seven thousand, six hundred seventy-six".