997502 has 8 divisors (see below), whose sum is σ = 1632312. Its totient is φ = 453400.

The previous prime is 997463. The next prime is 997511. The reversal of 997502 is 205799.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22649 + ... + 22692.

It is an arithmetic number, because the mean of its divisors is an integer number (204039).

2⁹⁹⁷⁵⁰² is an apocalyptic number.

997502 is a deficient number, since it is larger than the sum of its proper divisors (634810).

997502 is a wasteful number, since it uses less digits than its factorization.

997502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45354.

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 997502 is about 998.7502190238. The cubic root of 997502 is about 99.9166639036.

The spelling of 997502 in words is "nine hundred ninety-seven thousand, five hundred two".