68863924 has 6 divisors (see below), whose sum is σ = 120511874. Its totient is φ = 34431960.

The previous prime is 68863913. The next prime is 68863931. The reversal of 68863924 is 42936886.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 68359824 + 504100 = 8268^2 + 710^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8607987 + ... + 8607994.

Almost surely, 2^68863924 is an apocalyptic number.

It is an amenable number.

68863924 is a deficient number, since it is larger than the sum of its proper divisors (51647950).

68863924 is a wasteful number, since it uses less digits than its factorization.

68863924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17215985 (or 17215983 counting only the distinct ones).

The product of its digits is 497664, while the sum is 46.

The square root of 68863924 is about 8298.4290079508. The cubic root of 68863924 is about 409.8867900797.

The spelling of 68863924 in words is "sixty-eight million, eight hundred sixty-three thousand, nine hundred twenty-four".