56787678 has 12 divisors (see below), whose sum is σ = 123040008. Its totient is φ = 18929220.

The previous prime is 56787673. The next prime is 56787719. The reversal of 56787678 is 87678765.

56787678 is a `hidden beast` number, since 567 + 8 + 7 + 6 + 78 = 666.

56787678 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

56787678 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56787671) 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 5 ways as a sum of consecutive naturals, for example, 1577418 + ... + 1577453.

It is an arithmetic number, because the mean of its divisors is an integer number (10253334).

Almost surely, 2^56787678 is an apocalyptic number.

56787678 is an abundant number, since it is smaller than the sum of its proper divisors (66252330).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56787678 is a wasteful number, since it uses less digits than its factorization.

56787678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3154879 (or 3154876 counting only the distinct ones).

The product of its digits is 3951360, while the sum is 54.

The square root of 56787678 is about 7535.7599484060. The cubic root of 56787678 is about 384.3716697709.

The spelling of 56787678 in words is "fifty-six million, seven hundred eighty-seven thousand, six hundred seventy-eight".