68856953 has 24 divisors (see below), whose sum is σ = 81920160. Its totient is φ = 57183360.

The previous prime is 68856929. The next prime is 68856967. The reversal of 68856953 is 35965886.

It is not a de Polignac number, because 68856953 - 2¹⁶ = 68791417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68856553) by changing a digit.

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 in 23 ways as a sum of consecutive naturals, for example, 871568 + ... + 871646.

It is an arithmetic number, because the mean of its divisors is an integer number (3413340).

Almost surely, 2^68856953 is an apocalyptic number.

It is an amenable number.

68856953 is a deficient number, since it is larger than the sum of its proper divisors (13063207).

68856953 is a wasteful number, since it uses less digits than its factorization.

68856953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245 (or 166 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 50.

The square root of 68856953 is about 8298.0089780621. The cubic root of 68856953 is about 409.8729588549.

The spelling of 68856953 in words is "sixty-eight million, eight hundred fifty-six thousand, nine hundred fifty-three".