223694081 has 8 divisors (see below), whose sum is σ = 249208680. Its totient is φ = 199366272.

The previous prime is 223694077. The next prime is 223694083. The reversal of 223694081 is 180496322.

It can be written as a sum of positive squares in 4 ways, for example, as 27133681 + 196560400 = 5209^2 + 14020^2 .

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 223694081 - 2² = 223694077 is a prime.

It is a super-2 number, since 2×223694081² = 100078083748869122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223694083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296300 + ... + 297053.

It is an arithmetic number, because the mean of its divisors is an integer number (31151085).

Almost surely, 2^223694081 is an apocalyptic number.

It is an amenable number.

223694081 is a deficient number, since it is larger than the sum of its proper divisors (25514599).

223694081 is a wasteful number, since it uses less digits than its factorization.

223694081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593395.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 223694081 is about 14956.4060188268. The cubic root of 223694081 is about 607.0411951266.

The spelling of 223694081 in words is "two hundred twenty-three million, six hundred ninety-four thousand, eighty-one".