997144 has 8 divisors (see below), whose sum is σ = 1869660. Its totient is φ = 498568.

The previous prime is 997141. The next prime is 997147. The reversal of 997144 is 441799.

It is an interprime number because it is at equal distance from previous prime (997141) and next prime (997147).

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997141) 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 as a sum of consecutive naturals, namely, 62314 + ... + 62329.

2⁹⁹⁷¹⁴⁴ is an apocalyptic number.

It is an amenable number.

997144 is a deficient number, since it is larger than the sum of its proper divisors (872516).

997144 is a wasteful number, since it uses less digits than its factorization.

997144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124649 (or 124645 counting only the distinct ones).

The product of its digits is 9072, while the sum is 34.

The square root of 997144 is about 998.5709789494. The cubic root of 997144 is about 99.9047092255.

The spelling of 997144 in words is "nine hundred ninety-seven thousand, one hundred forty-four".