5681787 has 4 divisors (see below), whose sum is σ = 7575720. Its totient is φ = 3787856.

The previous prime is 5681777. The next prime is 5681803. The reversal of 5681787 is 7871865.

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

It is a cyclic number.

It is not a de Polignac number, because 5681787 - 2⁸ = 5681531 is a prime.

It is a D-number.

5681787 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5681707) 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, 946962 + ... + 946967.

It is an arithmetic number, because the mean of its divisors is an integer number (1893930).

Almost surely, 2^5681787 is an apocalyptic number.

5681787 is a deficient number, since it is larger than the sum of its proper divisors (1893933).

5681787 is a wasteful number, since it uses less digits than its factorization.

5681787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1893932.

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

The square root of 5681787 is about 2383.6499323516. The cubic root of 5681787 is about 178.4411374464.

The spelling of 5681787 in words is "five million, six hundred eighty-one thousand, seven hundred eighty-seven".