1797864 has 32 divisors (see below), whose sum is σ = 4691520. Its totient is φ = 573056.

The previous prime is 1797857. The next prime is 1797877. The reversal of 1797864 is 4687971.

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 7 ways as a sum of consecutive naturals, for example, 1077 + ... + 2180.

It is an arithmetic number, because the mean of its divisors is an integer number (146610).

2^1797864 is an apocalyptic number.

It is an amenable number.

1797864 is an abundant number, since it is smaller than the sum of its proper divisors (2893656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1797864 is a wasteful number, since it uses less digits than its factorization.

1797864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3289 (or 3285 counting only the distinct ones).

The product of its digits is 84672, while the sum is 42.

The square root of 1797864 is about 1340.8445100011. The cubic root of 1797864 is about 121.5959038902.

The spelling of 1797864 in words is "one million, seven hundred ninety-seven thousand, eight hundred sixty-four".