68784863 has 4 divisors (see below), whose sum is σ = 78611280. Its totient is φ = 58958448.

The previous prime is 68784857. The next prime is 68784869. The reversal of 68784863 is 36848786.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (68784857) and next prime (68784869).

It is a cyclic number.

It is not a de Polignac number, because 68784863 - 2⁴ = 68784847 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 (68784869) 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, 4913198 + ... + 4913211.

It is an arithmetic number, because the mean of its divisors is an integer number (19652820).

Almost surely, 2^68784863 is an apocalyptic number.

68784863 is a deficient number, since it is larger than the sum of its proper divisors (9826417).

68784863 is an equidigital number, since it uses as much as digits as its factorization.

68784863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9826416.

The product of its digits is 1548288, while the sum is 50.

The square root of 68784863 is about 8293.6640274368. The cubic root of 68784863 is about 409.7298696532.

The spelling of 68784863 in words is "sixty-eight million, seven hundred eighty-four thousand, eight hundred sixty-three".