68236933 has 4 divisors (see below), whose sum is σ = 68368428. Its totient is φ = 68105440.

The previous prime is 68236919. The next prime is 68236951. The reversal of 68236933 is 33963286.

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 43256929 + 24980004 = 6577^2 + 4998^2 .

It is a cyclic number.

It is not a de Polignac number, because 68236933 - 2²¹ = 66139781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68237933) 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, 64966 + ... + 66007.

It is an arithmetic number, because the mean of its divisors is an integer number (17092107).

Almost surely, 2^68236933 is an apocalyptic number.

It is an amenable number.

68236933 is a deficient number, since it is larger than the sum of its proper divisors (131495).

68236933 is a wasteful number, since it uses less digits than its factorization.

68236933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131494.

The product of its digits is 139968, while the sum is 40.

The square root of 68236933 is about 8260.5649322549. The cubic root of 68236933 is about 408.6390188962.

It can be divided in two parts, 68236 and 933, that added together give a square (69169 = 263²).

The spelling of 68236933 in words is "sixty-eight million, two hundred thirty-six thousand, nine hundred thirty-three".