233689643 has 8 divisors (see below), whose sum is σ = 256344816. Its totient is φ = 211269600.

The previous prime is 233689583. The next prime is 233689661. The reversal of 233689643 is 346986332.

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 233689643 - 2¹² = 233685547 is a prime.

It is a super-2 number, since 2×233689643² = 109221698490934898, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 233689594 and 233689603.

It is not an unprimeable number, because it can be changed into a prime (233683643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56696 + ... + 60677.

It is an arithmetic number, because the mean of its divisors is an integer number (32043102).

Almost surely, 2^233689643 is an apocalyptic number.

233689643 is a deficient number, since it is larger than the sum of its proper divisors (22655173).

233689643 is a wasteful number, since it uses less digits than its factorization.

233689643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117565.

The product of its digits is 559872, while the sum is 44.

The square root of 233689643 is about 15286.9108390152. The cubic root of 233689643 is about 615.9514591466.

The spelling of 233689643 in words is "two hundred thirty-three million, six hundred eighty-nine thousand, six hundred forty-three".