68252791 has 4 divisors (see below), whose sum is σ = 68856912. Its totient is φ = 67648672.

The previous prime is 68252777. The next prime is 68252813. The reversal of 68252791 is 19725286.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68252791 - 2⁵ = 68252759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68252291) 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 3 ways as a sum of consecutive naturals, for example, 301891 + ... + 302116.

It is an arithmetic number, because the mean of its divisors is an integer number (17214228).

Almost surely, 2^68252791 is an apocalyptic number.

68252791 is a deficient number, since it is larger than the sum of its proper divisors (604121).

68252791 is a wasteful number, since it uses less digits than its factorization.

68252791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604120.

The product of its digits is 60480, while the sum is 40.

The square root of 68252791 is about 8261.5247382066. The cubic root of 68252791 is about 408.6706718215.

The spelling of 68252791 in words is "sixty-eight million, two hundred fifty-two thousand, seven hundred ninety-one".