1663242 has 24 divisors (see below), whose sum is σ = 3820896. Its totient is φ = 472824.

The previous prime is 1663223. The next prime is 1663267. The reversal of 1663242 is 2423661.

It is a d-powerful number, because it can be written as 1 + 6 + 6⁴ + 3¹³ + 2⁵ + 4⁸ + 2¹¹ .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8259 + ... + 8457.

It is an arithmetic number, because the mean of its divisors is an integer number (159204).

2^1663242 is an apocalyptic number.

1663242 is an abundant number, since it is smaller than the sum of its proper divisors (2157654).

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

1663242 is an equidigital number, since it uses as much as digits as its factorization.

1663242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410 (or 211 counting only the distinct ones).

The product of its digits is 1728, while the sum is 24.

The square root of 1663242 is about 1289.6673989832. The cubic root of 1663242 is about 118.4818466379.

The spelling of 1663242 in words is "one million, six hundred sixty-three thousand, two hundred forty-two".