1223668773 has 24 divisors (see below), whose sum is σ = 1829214816. Its totient is φ = 787644000.

The previous prime is 1223668769. The next prime is 1223668783. The reversal of 1223668773 is 3778663221.

1223668773 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1223668773 - 2² = 1223668769 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223668703) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29598 + ... + 57648.

It is an arithmetic number, because the mean of its divisors is an integer number (76217284).

Almost surely, 2^1223668773 is an apocalyptic number.

It is an amenable number.

1223668773 is a deficient number, since it is larger than the sum of its proper divisors (605546043).

1223668773 is a wasteful number, since it uses less digits than its factorization.

1223668773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28225 (or 28222 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 1223668773 is about 34980.9773019566. The cubic root of 1223668773 is about 1069.5997492707.

The spelling of 1223668773 in words is "one billion, two hundred twenty-three million, six hundred sixty-eight thousand, seven hundred seventy-three".