1644496 has 20 divisors (see below), whose sum is σ = 3641632. Its totient is φ = 704736.

The previous prime is 1644493. The next prime is 1644497. The reversal of 1644496 is 6944461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1644491) 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, 7230 + ... + 7453.

2^1644496 is an apocalyptic number.

1644496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1644496 is an abundant number, since it is smaller than the sum of its proper divisors (1997136).

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

1644496 is a wasteful number, since it uses less digits than its factorization.

1644496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14698 (or 14692 counting only the distinct ones).

The product of its digits is 20736, while the sum is 34.

The square root of 1644496 is about 1282.3790391300. The cubic root of 1644496 is about 118.0350369958.

The spelling of 1644496 in words is "one million, six hundred forty-four thousand, four hundred ninety-six".