68312233 has 4 divisors (see below), whose sum is σ = 74522448. Its totient is φ = 62102020.

The previous prime is 68312227. The next prime is 68312261. The reversal of 68312233 is 33221386.

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 a de Polignac number, because none of the positive numbers 2^k-68312233 is a prime.

It is a super-2 number, since 2×68312233² = 9333122354892578, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68312033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3105091 + ... + 3105112.

It is an arithmetic number, because the mean of its divisors is an integer number (18630612).

Almost surely, 2^68312233 is an apocalyptic number.

It is an amenable number.

68312233 is a deficient number, since it is larger than the sum of its proper divisors (6210215).

68312233 is a wasteful number, since it uses less digits than its factorization.

68312233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6210214.

The product of its digits is 5184, while the sum is 28.

The square root of 68312233 is about 8265.1214752114. The cubic root of 68312233 is about 408.7892757791.

The spelling of 68312233 in words is "sixty-eight million, three hundred twelve thousand, two hundred thirty-three".