229606681 has 4 divisors (see below), whose sum is σ = 232752052. Its totient is φ = 226461312.

The previous prime is 229606667. The next prime is 229606693. The reversal of 229606681 is 186606922.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 75846681 + 153760000 = 8709^2 + 12400^2 .

It is a cyclic number.

It is not a de Polignac number, because 229606681 - 2⁵ = 229606649 is a prime.

It is a super-2 number, since 2×229606681² = 105438455919671522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (229606651) 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, 1572576 + ... + 1572721.

It is an arithmetic number, because the mean of its divisors is an integer number (58188013).

Almost surely, 2^229606681 is an apocalyptic number.

It is an amenable number.

229606681 is a deficient number, since it is larger than the sum of its proper divisors (3145371).

229606681 is an equidigital number, since it uses as much as digits as its factorization.

229606681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3145370.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 229606681 is about 15152.7779961300. Note that the first 3 decimals coincide. The cubic root of 229606681 is about 612.3431166157.

The spelling of 229606681 in words is "two hundred twenty-nine million, six hundred six thousand, six hundred eighty-one".