5681385 has 24 divisors (see below), whose sum is σ = 9906624. Its totient is φ = 3012000.

The previous prime is 5681381. The next prime is 5681413. The reversal of 5681385 is 5831865.

5681385 is a `hidden beast` number, since 568 + 13 + 85 = 666.

It is not a de Polignac number, because 5681385 - 2² = 5681381 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5681381) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11044 + ... + 11546.

It is an arithmetic number, because the mean of its divisors is an integer number (412776).

Almost surely, 2^5681385 is an apocalyptic number.

It is an amenable number.

5681385 is a deficient number, since it is larger than the sum of its proper divisors (4225239).

5681385 is a wasteful number, since it uses less digits than its factorization.

5681385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765 (or 762 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 5681385 is about 2383.5656063973. The cubic root of 5681385 is about 178.4369289683.

It can be divided in two parts, 568 and 1385, that added together give a triangular number (1953 = T₆₂).

The spelling of 5681385 in words is "five million, six hundred eighty-one thousand, three hundred eighty-five".