68864624 has 10 divisors (see below), whose sum is σ = 133425240. Its totient is φ = 34432304.

The previous prime is 68864597. The next prime is 68864633. The reversal of 68864624 is 42646886.

It is a super-2 number, since 2×68864624² = 9484672877322752, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 2152004 + ... + 2152035.

It is an arithmetic number, because the mean of its divisors is an integer number (13342524).

Almost surely, 2^68864624 is an apocalyptic number.

It is an amenable number.

68864624 is a deficient number, since it is larger than the sum of its proper divisors (64560616).

68864624 is a wasteful number, since it uses less digits than its factorization.

68864624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4304047 (or 4304041 counting only the distinct ones).

The product of its digits is 442368, while the sum is 44.

The square root of 68864624 is about 8298.4711845014. The cubic root of 68864624 is about 409.8881789045. Note that the first 3 decimals are identical.

The spelling of 68864624 in words is "sixty-eight million, eight hundred sixty-four thousand, six hundred twenty-four".