68025791 has 4 divisors (see below), whose sum is σ = 68044392. Its totient is φ = 68007192.

The previous prime is 68025787. The next prime is 68025799. The reversal of 68025791 is 19752086.

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 68025791 - 2² = 68025787 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 (68025799) 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, 1796 + ... + 11801.

It is an arithmetic number, because the mean of its divisors is an integer number (17011098).

Almost surely, 2^68025791 is an apocalyptic number.

68025791 is a deficient number, since it is larger than the sum of its proper divisors (18601).

68025791 is a wasteful number, since it uses less digits than its factorization.

68025791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18600.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 68025791 is about 8247.7749120596. The cubic root of 68025791 is about 408.2171065940.

The spelling of 68025791 in words is "sixty-eight million, twenty-five thousand, seven hundred ninety-one".