5781687 has 8 divisors (see below), whose sum is σ = 7780080. Its totient is φ = 3818880.

The previous prime is 5781661. The next prime is 5781689. The reversal of 5781687 is 7861875.

5781687 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 5781687 - 2⁶ = 5781623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5781689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8514 + ... + 9167.

It is an arithmetic number, because the mean of its divisors is an integer number (972510).

Almost surely, 2^5781687 is an apocalyptic number.

5781687 is a deficient number, since it is larger than the sum of its proper divisors (1998393).

5781687 is a wasteful number, since it uses less digits than its factorization.

5781687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17793.

The product of its digits is 94080, while the sum is 42.

The square root of 5781687 is about 2404.5138801845. The cubic root of 5781687 is about 179.4808808453.

The spelling of 5781687 in words is "five million, seven hundred eighty-one thousand, six hundred eighty-seven".