997937 has 8 divisors (see below), whose sum is σ = 1071360. Its totient is φ = 926640.

The previous prime is 997933. The next prime is 997949. The reversal of 997937 is 739799.

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

It is a cyclic number.

It is not a de Polignac number, because 997937 - 2² = 997933 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (997933) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 512 + ... + 1502.

It is an arithmetic number, because the mean of its divisors is an integer number (133920).

2⁹⁹⁷⁹³⁷ is an apocalyptic number.

It is an amenable number.

997937 is a deficient number, since it is larger than the sum of its proper divisors (73423).

997937 is a wasteful number, since it uses less digits than its factorization.

997937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063.

The product of its digits is 107163, while the sum is 44.

The square root of 997937 is about 998.9679674544. The cubic root of 997937 is about 99.9311859905.

The spelling of 997937 in words is "nine hundred ninety-seven thousand, nine hundred thirty-seven".