1648698 has 8 divisors (see below), whose sum is σ = 3297408. Its totient is φ = 549564.

The previous prime is 1648697. The next prime is 1648723. The reversal of 1648698 is 8968461.

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

1648698 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1648697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137386 + ... + 137397.

It is an arithmetic number, because the mean of its divisors is an integer number (412176).

2^1648698 is an apocalyptic number.

1648698 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1648698 is a wasteful number, since it uses less digits than its factorization.

1648698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274788.

The product of its digits is 82944, while the sum is 42.

The square root of 1648698 is about 1284.0163550360. The cubic root of 1648698 is about 118.1354854778.

Subtracting from 1648698 its sum of digits (42), we obtain a square (1648656 = 1284²).

It can be divided in two parts, 1648 and 698, that added together give a triangular number (2346 = T₆₈).

The spelling of 1648698 in words is "one million, six hundred forty-eight thousand, six hundred ninety-eight".