223264634661 has 16 divisors (see below), whose sum is σ = 330788321920. Its totient is φ = 148831434720.

The previous prime is 223264634639. The next prime is 223264634687. The reversal of 223264634661 is 166436462322.

223264634661 is a `hidden beast` number, since 2 + 2 + 3 + 2 + 6 + 4 + 634 + 6 + 6 + 1 = 666.

It is not a de Polignac number, because 223264634661 - 2⁵ = 223264634629 is a prime.

It is a super-3 number, since 3×223264634661³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223264634261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34656 + ... + 669126.

It is an arithmetic number, because the mean of its divisors is an integer number (20674270120).

Almost surely, 2^223264634661 is an apocalyptic number.

It is an amenable number.

223264634661 is a deficient number, since it is larger than the sum of its proper divisors (107523687259).

223264634661 is a wasteful number, since it uses less digits than its factorization.

223264634661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647513 (or 647507 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 45.

The spelling of 223264634661 in words is "two hundred twenty-three billion, two hundred sixty-four million, six hundred thirty-four thousand, six hundred sixty-one".