68239264 has 12 divisors (see below), whose sum is σ = 134346114. Its totient is φ = 34119616.

The previous prime is 68239261. The next prime is 68239267. The reversal of 68239264 is 46293286.

It is an interprime number because it is at equal distance from previous prime (68239261) and next prime (68239267).

It can be written as a sum of positive squares in only one way, i.e., 68227600 + 11664 = 8260^2 + 108^2 .

It is not an unprimeable number, because it can be changed into a prime (68239261) 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 as a sum of consecutive naturals, namely, 1066207 + ... + 1066270.

Almost surely, 2^68239264 is an apocalyptic number.

It is an amenable number.

68239264 is a deficient number, since it is larger than the sum of its proper divisors (66106850).

68239264 is a wasteful number, since it uses less digits than its factorization.

68239264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2132487 (or 2132479 counting only the distinct ones).

The product of its digits is 124416, while the sum is 40.

The square root of 68239264 is about 8260.7060230951. The cubic root of 68239264 is about 408.6436719321.

The spelling of 68239264 in words is "sixty-eight million, two hundred thirty-nine thousand, two hundred sixty-four".