997706 has 8 divisors (see below), whose sum is σ = 1503684. Its totient is φ = 496480.

The previous prime is 997699. The next prime is 997727. The reversal of 997706 is 607799.

It can be written as a sum of positive squares in 2 ways, for example, as 982081 + 15625 = 991^2 + 125^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 997706.

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 in 3 ways as a sum of consecutive naturals, for example, 605 + ... + 1536.

2⁹⁹⁷⁷⁰⁶ is an apocalyptic number.

997706 is a deficient number, since it is larger than the sum of its proper divisors (505978).

997706 is a wasteful number, since it uses less digits than its factorization.

997706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2376.

The product of its (nonzero) digits is 23814, while the sum is 38.

The square root of 997706 is about 998.8523414399. The cubic root of 997706 is about 99.9234747872.

The spelling of 997706 in words is "nine hundred ninety-seven thousand, seven hundred six".