223454661 has 4 divisors (see below), whose sum is σ = 297939552. Its totient is φ = 148969772.

The previous prime is 223454659. The next prime is 223454669. The reversal of 223454661 is 166454322.

223454661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 223454661 - 2¹ = 223454659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223454669) 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, 37242441 + ... + 37242446.

It is an arithmetic number, because the mean of its divisors is an integer number (74484888).

Almost surely, 2^223454661 is an apocalyptic number.

It is an amenable number.

223454661 is a deficient number, since it is larger than the sum of its proper divisors (74484891).

223454661 is an equidigital number, since it uses as much as digits as its factorization.

223454661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74484890.

The product of its digits is 34560, while the sum is 33.

The square root of 223454661 is about 14948.3999478205. The cubic root of 223454661 is about 606.8245455475.

It can be divided in two parts, 223454 and 661, that added together give a triangular number (224115 = T₆₆₉).

The spelling of 223454661 in words is "two hundred twenty-three million, four hundred fifty-four thousand, six hundred sixty-one".