223742567987 has 4 divisors (see below), whose sum is σ = 223745360640. Its totient is φ = 223739775336.

The previous prime is 223742567843. The next prime is 223742568019. The reversal of 223742567987 is 789765247322.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223742567987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223742567287) 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, 1272488 + ... + 1437605.

It is an arithmetic number, because the mean of its divisors is an integer number (55936340160).

Almost surely, 2^223742567987 is an apocalyptic number.

223742567987 is a deficient number, since it is larger than the sum of its proper divisors (2792653).

223742567987 is an equidigital number, since it uses as much as digits as its factorization.

223742567987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2792652.

The product of its digits is 71124480, while the sum is 62.

The spelling of 223742567987 in words is "two hundred twenty-three billion, seven hundred forty-two million, five hundred sixty-seven thousand, nine hundred eighty-seven".