997248285 has 24 divisors (see below), whose sum is σ = 1885706784. Its totient is φ = 483514080.

The previous prime is 997248277. The next prime is 997248299. The reversal of 997248285 is 582842799.

997248285 is a `hidden beast` number, since 99 + 72 + 482 + 8 + 5 = 666.

It is not a de Polignac number, because 997248285 - 2³ = 997248277 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1006827 + ... + 1007816.

It is an arithmetic number, because the mean of its divisors is an integer number (78571116).

Almost surely, 2^997248285 is an apocalyptic number.

It is an amenable number.

997248285 is a deficient number, since it is larger than the sum of its proper divisors (888458499).

997248285 is a wasteful number, since it uses less digits than its factorization.

997248285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2014665 (or 2014662 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The square root of 997248285 is about 31579.2381953713. The cubic root of 997248285 is about 999.0819190520.

The spelling of 997248285 in words is "nine hundred ninety-seven million, two hundred forty-eight thousand, two hundred eighty-five".