68875949 has 4 divisors (see below), whose sum is σ = 68978364. Its totient is φ = 68773536.

The previous prime is 68875909. The next prime is 68875967. The reversal of 68875949 is 94957886.

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 44689225 + 24186724 = 6685^2 + 4918^2 .

It is a cyclic number.

It is not a de Polignac number, because 68875949 - 2⁸ = 68875693 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 68875894 and 68875903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68875909) 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, 50192 + ... + 51545.

It is an arithmetic number, because the mean of its divisors is an integer number (17244591).

Almost surely, 2^68875949 is an apocalyptic number.

It is an amenable number.

68875949 is a deficient number, since it is larger than the sum of its proper divisors (102415).

68875949 is a wasteful number, since it uses less digits than its factorization.

68875949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102414.

The product of its digits is 4354560, while the sum is 56.

The square root of 68875949 is about 8299.1535110516. The cubic root of 68875949 is about 409.9106467983.

The spelling of 68875949 in words is "sixty-eight million, eight hundred seventy-five thousand, nine hundred forty-nine".