5998644 has 48 divisors (see below), whose sum is σ = 15803200. Its totient is φ = 1967328.

The previous prime is 5998639. The next prime is 5998651. The reversal of 5998644 is 4468995.

It is a happy number.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 5998644.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6822 + ... + 7650.

Almost surely, 2^5998644 is an apocalyptic number.

5998644 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5998644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7901600).

5998644 is an abundant number, since it is smaller than the sum of its proper divisors (9804556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5998644 is a wasteful number, since it uses less digits than its factorization.

5998644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909 (or 901 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 5998644 is about 2449.2129348017. The cubic root of 5998644 is about 181.6983692767.

The spelling of 5998644 in words is "five million, nine hundred ninety-eight thousand, six hundred forty-four".