1223026647 has 8 divisors (see below), whose sum is σ = 1630873344. Its totient is φ = 815265528.

The previous prime is 1223026639. The next prime is 1223026661. The reversal of 1223026647 is 7466203221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1223026647 - 2³ = 1223026639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223026687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28738 + ... + 57200.

It is an arithmetic number, because the mean of its divisors is an integer number (203859168).

Almost surely, 2^1223026647 is an apocalyptic number.

1223026647 is a deficient number, since it is larger than the sum of its proper divisors (407846697).

1223026647 is a wasteful number, since it uses less digits than its factorization.

1223026647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42789.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 1223026647 is about 34971.7978805780. The cubic root of 1223026647 is about 1069.4126240192.

Adding to 1223026647 its reverse (7466203221), we get a palindrome (8689229868).

The spelling of 1223026647 in words is "one billion, two hundred twenty-three million, twenty-six thousand, six hundred forty-seven".