1798656 has 40 divisors (see below), whose sum is σ = 4795824. Its totient is φ = 599040.

The previous prime is 1798649. The next prime is 1798679. The reversal of 1798656 is 6568971.

It is a d-powerful number, because it can be written as 1 + 7⁶ + 9² + 8 + 6⁴ + 5 + 6⁸ .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 951 + ... + 2121.

2^1798656 is an apocalyptic number.

1798656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1798656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2397912).

1798656 is an abundant number, since it is smaller than the sum of its proper divisors (2997168).

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

1798656 is an equidigital number, since it uses as much as digits as its factorization.

1798656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192 (or 1176 counting only the distinct ones).

The product of its digits is 90720, while the sum is 42.

The square root of 1798656 is about 1341.1398137405. The cubic root of 1798656 is about 121.6137565231.

The spelling of 1798656 in words is "one million, seven hundred ninety-eight thousand, six hundred fifty-six".