5711985 has 32 divisors (see below), whose sum is σ = 10512000. Its totient is φ = 2939328.

The previous prime is 5711971. The next prime is 5711987. The reversal of 5711985 is 5891175.

5711985 is a `hidden beast` number, since 571 + 1 + 9 + 85 = 666.

It is not a de Polignac number, because 5711985 - 2⁶ = 5711921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5711987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3186 + ... + 4644.

It is an arithmetic number, because the mean of its divisors is an integer number (328500).

Almost surely, 2^5711985 is an apocalyptic number.

It is an amenable number.

5711985 is a deficient number, since it is larger than the sum of its proper divisors (4800015).

5711985 is a wasteful number, since it uses less digits than its factorization.

5711985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1502 (or 1496 counting only the distinct ones).

The product of its digits is 12600, while the sum is 36.

The square root of 5711985 is about 2389.9759413015. The cubic root of 5711985 is about 178.7567099377.

It can be divided in two parts, 571 and 1985, that added together give a triangular number (2556 = T₇₁).

The spelling of 5711985 in words is "five million, seven hundred eleven thousand, nine hundred eighty-five".