1648897 has 8 divisors (see below), whose sum is σ = 1707552. Its totient is φ = 1591200.

The previous prime is 1648879. The next prime is 1648909. The reversal of 1648897 is 7988461.

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

It is a cyclic number.

It is not a de Polignac number, because 1648897 - 2¹¹ = 1646849 is a prime.

It is a super-2 number, since 2×1648897² = 5437722633218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1648817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5218 + ... + 5524.

It is an arithmetic number, because the mean of its divisors is an integer number (213444).

2^1648897 is an apocalyptic number.

It is an amenable number.

1648897 is a deficient number, since it is larger than the sum of its proper divisors (58655).

1648897 is a wasteful number, since it uses less digits than its factorization.

1648897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479.

The product of its digits is 96768, while the sum is 43.

The square root of 1648897 is about 1284.0938439226. The cubic root of 1648897 is about 118.1402383223.

The spelling of 1648897 in words is "one million, six hundred forty-eight thousand, eight hundred ninety-seven".