997546 has 8 divisors (see below), whose sum is σ = 1632384. Its totient is φ = 453420.

The previous prime is 997541. The next prime is 997547. The reversal of 997546 is 645799.

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

It is a junction number, because it is equal to n+sod(n) for n = 997499 and 997508.

It is not an unprimeable number, because it can be changed into a prime (997541) 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 3 ways as a sum of consecutive naturals, for example, 22650 + ... + 22693.

It is an arithmetic number, because the mean of its divisors is an integer number (204048).

2⁹⁹⁷⁵⁴⁶ is an apocalyptic number.

997546 is a deficient number, since it is larger than the sum of its proper divisors (634838).

997546 is a wasteful number, since it uses less digits than its factorization.

997546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45356.

The product of its digits is 68040, while the sum is 40.

The square root of 997546 is about 998.7722463104. The cubic root of 997546 is about 99.9181329962.

The spelling of 997546 in words is "nine hundred ninety-seven thousand, five hundred forty-six".