1223780067 has 12 divisors (see below), whose sum is σ = 1844538384. Its totient is φ = 780381360.

The previous prime is 1223780059. The next prime is 1223780093. The reversal of 1223780067 is 7600873221.

1223780067 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 1223780067 - 2³ = 1223780059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1223780057) 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, 2955784 + ... + 2956197.

It is an arithmetic number, because the mean of its divisors is an integer number (153711532).

Almost surely, 2^1223780067 is an apocalyptic number.

1223780067 is a deficient number, since it is larger than the sum of its proper divisors (620758317).

1223780067 is a wasteful number, since it uses less digits than its factorization.

1223780067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5912010 (or 5912007 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 1223780067 is about 34982.5680446705. The cubic root of 1223780067 is about 1069.6321753728.

The spelling of 1223780067 in words is "one billion, two hundred twenty-three million, seven hundred eighty thousand, sixty-seven".