1663002 has 48 divisors (see below), whose sum is σ = 4054752. Its totient is φ = 488160.

The previous prime is 1662979. The next prime is 1663009. The reversal of 1663002 is 2003661.

It is a happy number.

1663002 is a `hidden beast` number, since 1 + 663 + 0 + 0 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1663009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7213 + ... + 7439.

It is an arithmetic number, because the mean of its divisors is an integer number (84474).

2^1663002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1663002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2027376).

1663002 is an abundant number, since it is smaller than the sum of its proper divisors (2391750).

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

1663002 is a wasteful number, since it uses less digits than its factorization.

1663002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283 (or 280 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1663002 is about 1289.5743483801. The cubic root of 1663002 is about 118.4761475252.

Adding to 1663002 its reverse (2003661), we get a palindrome (3666663).

The spelling of 1663002 in words is "one million, six hundred sixty-three thousand, two".