223147645 has 8 divisors (see below), whose sum is σ = 306031104. Its totient is φ = 153015504.

The previous prime is 223147637. The next prime is 223147667. The reversal of 223147645 is 546741322.

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

It is a cyclic number.

It is not a de Polignac number, because 223147645 - 2³ = 223147637 is a prime.

It is a super-3 number, since 3×223147645³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 223147645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3187789 + ... + 3187858.

It is an arithmetic number, because the mean of its divisors is an integer number (38253888).

Almost surely, 2^223147645 is an apocalyptic number.

It is an amenable number.

223147645 is a deficient number, since it is larger than the sum of its proper divisors (82883459).

223147645 is an equidigital number, since it uses as much as digits as its factorization.

223147645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6375659.

The product of its digits is 40320, while the sum is 34.

The square root of 223147645 is about 14938.1272253251. The cubic root of 223147645 is about 606.5465022169.

Adding to 223147645 its reverse (546741322), we get a palindrome (769888967).

The spelling of 223147645 in words is "two hundred twenty-three million, one hundred forty-seven thousand, six hundred forty-five".