663442311 has 12 divisors (see below), whose sum is σ = 1029012792. Its totient is φ = 379109808.

The previous prime is 663442249. The next prime is 663442321. The reversal of 663442311 is 113244366.

It is not a de Polignac number, because 663442311 - 2⁹ = 663441799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663442321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2256460 + ... + 2256753.

It is an arithmetic number, because the mean of its divisors is an integer number (85751066).

Almost surely, 2^663442311 is an apocalyptic number.

663442311 is a deficient number, since it is larger than the sum of its proper divisors (365570481).

663442311 is a wasteful number, since it uses less digits than its factorization.

663442311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4513230 (or 4513223 counting only the distinct ones).

The product of its digits is 10368, while the sum is 30.

The square root of 663442311 is about 25757.3739150559. The cubic root of 663442311 is about 872.1698210167.

Adding to 663442311 its reverse (113244366), we get a palindrome (776686677).

The spelling of 663442311 in words is "six hundred sixty-three million, four hundred forty-two thousand, three hundred eleven".