68940869 has 8 divisors (see below), whose sum is σ = 72680448. Its totient is φ = 65296080.

The previous prime is 68940857. The next prime is 68940881. The reversal of 68940869 is 96804986.

It is an interprime number because it is at equal distance from previous prime (68940857) and next prime (68940881).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68940869 - 2⁴ = 68940853 is a prime.

It is a super-2 number, since 2×68940869² = 9505686836950322, 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 (68940889) 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 7 ways as a sum of consecutive naturals, for example, 22202 + ... + 25115.

It is an arithmetic number, because the mean of its divisors is an integer number (9085056).

Almost surely, 2^68940869 is an apocalyptic number.

It is an amenable number.

68940869 is a deficient number, since it is larger than the sum of its proper divisors (3739579).

68940869 is a wasteful number, since it uses less digits than its factorization.

68940869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47395.

The product of its (nonzero) digits is 746496, while the sum is 50.

The square root of 68940869 is about 8303.0638321044. The cubic root of 68940869 is about 410.0393953817.

The spelling of 68940869 in words is "sixty-eight million, nine hundred forty thousand, eight hundred sixty-nine".