68791869 has 8 divisors (see below), whose sum is σ = 101913920. Its totient is φ = 45861228.

The previous prime is 68791867. The next prime is 68791871. The reversal of 68791869 is 96819786.

It is an interprime number because it is at equal distance from previous prime (68791867) and next prime (68791871).

It is not a de Polignac number, because 68791869 - 2¹ = 68791867 is a prime.

It is a super-2 number, since 2×68791869² = 9464642481026322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68791861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1273897 + ... + 1273950.

It is an arithmetic number, because the mean of its divisors is an integer number (12739240).

Almost surely, 2^68791869 is an apocalyptic number.

It is an amenable number.

68791869 is a deficient number, since it is larger than the sum of its proper divisors (33122051).

68791869 is a wasteful number, since it uses less digits than its factorization.

68791869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2547856 (or 2547850 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 68791869 is about 8294.0863873003. The cubic root of 68791869 is about 409.7437800296.

The spelling of 68791869 in words is "sixty-eight million, seven hundred ninety-one thousand, eight hundred sixty-nine".