663412611 has 16 divisors (see below), whose sum is σ = 892383488. Its totient is φ = 438372000.

The previous prime is 663412583. The next prime is 663412657. The reversal of 663412611 is 116214366.

It is not a de Polignac number, because 663412611 - 2¹⁷ = 663281539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (663410611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243720 + ... + 246426.

It is an arithmetic number, because the mean of its divisors is an integer number (55773968).

Almost surely, 2^663412611 is an apocalyptic number.

663412611 is a deficient number, since it is larger than the sum of its proper divisors (228970877).

663412611 is a wasteful number, since it uses less digits than its factorization.

663412611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3402.

The product of its digits is 5184, while the sum is 30.

The square root of 663412611 is about 25756.7973746737. The cubic root of 663412611 is about 872.1568061547.

Adding to 663412611 its reverse (116214366), we get a palindrome (779626977).

The spelling of 663412611 in words is "six hundred sixty-three million, four hundred twelve thousand, six hundred eleven".