1223252664 has 32 divisors (see below), whose sum is σ = 3109968000. Its totient is φ = 400839392.

The previous prime is 1223252647. The next prime is 1223252689. The reversal of 1223252664 is 4662523221.

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, 430524 + ... + 433355.

It is an arithmetic number, because the mean of its divisors is an integer number (97186500).

Almost surely, 2^1223252664 is an apocalyptic number.

It is an amenable number.

1223252664 is an abundant number, since it is smaller than the sum of its proper divisors (1886715336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1223252664 is a wasteful number, since it uses less digits than its factorization.

1223252664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863947 (or 863943 counting only the distinct ones).

The product of its digits is 34560, while the sum is 33.

The square root of 1223252664 is about 34975.0291493803. The cubic root of 1223252664 is about 1069.4784962677.

Adding to 1223252664 its reverse (4662523221), we get a palindrome (5885775885).

The spelling of 1223252664 in words is "one billion, two hundred twenty-three million, two hundred fifty-two thousand, six hundred sixty-four".