5687778 has 8 divisors (see below), whose sum is σ = 11375568. Its totient is φ = 1895924.

The previous prime is 5687771. The next prime is 5687791. The reversal of 5687778 is 8777865.

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

5687778 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5687771) 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, 473976 + ... + 473987.

It is an arithmetic number, because the mean of its divisors is an integer number (1421946).

Almost surely, 2^5687778 is an apocalyptic number.

5687778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

5687778 is a wasteful number, since it uses less digits than its factorization.

5687778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947968.

The product of its digits is 658560, while the sum is 48.

The square root of 5687778 is about 2384.9062874671. The cubic root of 5687778 is about 178.5038328234.

The spelling of 5687778 in words is "five million, six hundred eighty-seven thousand, seven hundred seventy-eight".