663412 has 12 divisors (see below), whose sum is σ = 1211616. Its totient is φ = 317240.

The previous prime is 663409. The next prime is 663437. The reversal of 663412 is 214366.

663412 is an esthetic number in base 7, because in such base its adjacent digits differ by 1.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3514 + ... + 3697.

It is an arithmetic number, because the mean of its divisors is an integer number (100968).

2⁶⁶³⁴¹² is an apocalyptic number.

It is an amenable number.

663412 is a deficient number, since it is larger than the sum of its proper divisors (548204).

663412 is a wasteful number, since it uses less digits than its factorization.

663412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7238 (or 7236 counting only the distinct ones).

The product of its digits is 864, while the sum is 22.

The square root of 663412 is about 814.5010742780. The cubic root of 663412 is about 87.2156538404.

Adding to 663412 its reverse (214366), we get a palindrome (877778).

The spelling of 663412 in words is "six hundred sixty-three thousand, four hundred twelve".