997708 has 6 divisors (see below), whose sum is σ = 1745996. Its totient is φ = 498852.

The previous prime is 997699. The next prime is 997727. The reversal of 997708 is 807799.

It is an unprimeable 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, 124710 + ... + 124717.

2⁹⁹⁷⁷⁰⁸ is an apocalyptic number.

It is an amenable number.

997708 is a deficient number, since it is larger than the sum of its proper divisors (748288).

997708 is a wasteful number, since it uses less digits than its factorization.

997708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249431 (or 249429 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 40.

The square root of 997708 is about 998.8533425884. The cubic root of 997708 is about 99.9235415560.

The spelling of 997708 in words is "nine hundred ninety-seven thousand, seven hundred eight".