5998905 has 24 divisors (see below), whose sum is σ = 11344320. Its totient is φ = 2908320.

The previous prime is 5998901. The next prime is 5998907. The reversal of 5998905 is 5098995.

It is not a de Polignac number, because 5998905 - 2² = 5998901 is a prime.

It is a super-2 number, since 2×5998905² = 71973722398050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (5998901) 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, 5565 + ... + 6554.

It is an arithmetic number, because the mean of its divisors is an integer number (472680).

Almost surely, 2^5998905 is an apocalyptic number.

5998905 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5998905 is a deficient number, since it is larger than the sum of its proper divisors (5345415).

5998905 is a wasteful number, since it uses less digits than its factorization.

5998905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12141 (or 12138 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 45.

The square root of 5998905 is about 2449.2662166453. The cubic root of 5998905 is about 181.7010044604.

It can be divided in two parts, 5998 and 905, that added together give a triangular number (6903 = T₁₁₇).

The spelling of 5998905 in words is "five million, nine hundred ninety-eight thousand, nine hundred five".