1223632664 has 16 divisors (see below), whose sum is σ = 2429271000. Its totient is φ = 575827072.

The previous prime is 1223632649. The next prime is 1223632667. The reversal of 1223632664 is 4662363221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223632667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4498514 + ... + 4498785.

Almost surely, 2^1223632664 is an apocalyptic number.

It is an amenable number.

1223632664 is a deficient number, since it is larger than the sum of its proper divisors (1205638336).

1223632664 is a wasteful number, since it uses less digits than its factorization.

1223632664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8997322 (or 8997318 counting only the distinct ones).

The product of its digits is 62208, while the sum is 35.

The square root of 1223632664 is about 34980.4611747758. The cubic root of 1223632664 is about 1069.5892282980.

Adding to 1223632664 its reverse (4662363221), we get a palindrome (5885995885).

The spelling of 1223632664 in words is "one billion, two hundred twenty-three million, six hundred thirty-two thousand, six hundred sixty-four".