5981905 has 8 divisors (see below), whose sum is σ = 7215912. Its totient is φ = 4760448.

The previous prime is 5981891. The next prime is 5981939. The reversal of 5981905 is 5091895.

It can be written as a sum of positive squares in 4 ways, for example, as 3560769 + 2421136 = 1887^2 + 1556^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 5981905 - 2⁵ = 5981873 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2052 + ... + 4021.

It is an arithmetic number, because the mean of its divisors is an integer number (901989).

Almost surely, 2^5981905 is an apocalyptic number.

It is an amenable number.

5981905 is a deficient number, since it is larger than the sum of its proper divisors (1234007).

5981905 is a wasteful number, since it uses less digits than its factorization.

5981905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6275.

The product of its (nonzero) digits is 16200, while the sum is 37.

The square root of 5981905 is about 2445.7933273276. The cubic root of 5981905 is about 181.5292042446.

It can be divided in two parts, 5981 and 905, that added together give a palindrome (6886).

The spelling of 5981905 in words is "five million, nine hundred eighty-one thousand, nine hundred five".