68375887 has 4 divisors (see below), whose sum is σ = 72398016. Its totient is φ = 64353760.

The previous prime is 68375869. The next prime is 68375893. The reversal of 68375887 is 78857386.

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 68375887 - 2⁷ = 68375759 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 (68375807) 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, 2011039 + ... + 2011072.

It is an arithmetic number, because the mean of its divisors is an integer number (18099504).

Almost surely, 2^68375887 is an apocalyptic number.

68375887 is a deficient number, since it is larger than the sum of its proper divisors (4022129).

68375887 is a wasteful number, since it uses less digits than its factorization.

68375887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4022128.

The product of its digits is 2257920, while the sum is 52.

The square root of 68375887 is about 8268.9713386854. The cubic root of 68375887 is about 408.9162076299.

The spelling of 68375887 in words is "sixty-eight million, three hundred seventy-five thousand, eight hundred eighty-seven".