1223877647 has 4 divisors (see below), whose sum is σ = 1288292280. Its totient is φ = 1159463016.

The previous prime is 1223877637. The next prime is 1223877671. The reversal of 1223877647 is 7467783221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1223877647 - 2¹⁰ = 1223876623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223877607) 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, 32207288 + ... + 32207325.

It is an arithmetic number, because the mean of its divisors is an integer number (322073070).

Almost surely, 2^1223877647 is an apocalyptic number.

1223877647 is a deficient number, since it is larger than the sum of its proper divisors (64414633).

1223877647 is an equidigital number, since it uses as much as digits as its factorization.

1223877647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64414632.

The product of its digits is 790272, while the sum is 47.

The square root of 1223877647 is about 34983.9627115054. The cubic root of 1223877647 is about 1069.6606042102.

The spelling of 1223877647 in words is "one billion, two hundred twenty-three million, eight hundred seventy-seven thousand, six hundred forty-seven".