56784887 has 2 divisors, whose sum is σ = 56784888. Its totient is φ = 56784886.

The previous prime is 56784857. The next prime is 56784941. The reversal of 56784887 is 78848765.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56784887 - 2⁶ = 56784823 is a prime.

It is a super-4 number, since 4×56784887⁴ (a number of 32 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56784817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28392443 + 28392444.

It is an arithmetic number, because the mean of its divisors is an integer number (28392444).

Almost surely, 2^56784887 is an apocalyptic number.

56784887 is a deficient number, since it is larger than the sum of its proper divisors (1).

56784887 is an equidigital number, since it uses as much as digits as its factorization.

56784887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3010560, while the sum is 53.

The square root of 56784887 is about 7535.5747624186. The cubic root of 56784887 is about 384.3653726366.

The spelling of 56784887 in words is "fifty-six million, seven hundred eighty-four thousand, eight hundred eighty-seven".