1663412 has 24 divisors (see below), whose sum is σ = 3141600. Its totient is φ = 768096.

The previous prime is 1663397. The next prime is 1663457. The reversal of 1663412 is 2143661.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3014 + ... + 3522.

It is an arithmetic number, because the mean of its divisors is an integer number (130900).

2^1663412 is an apocalyptic number.

It is an amenable number.

1663412 is a deficient number, since it is larger than the sum of its proper divisors (1478188).

1663412 is a wasteful number, since it uses less digits than its factorization.

1663412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575 (or 573 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

The square root of 1663412 is about 1289.7333057652. The cubic root of 1663412 is about 118.4858831777.

Subtracting 1663412 from its reverse (2143661), we obtain a square (480249 = 693²).

The spelling of 1663412 in words is "one million, six hundred sixty-three thousand, four hundred twelve".