6398533 has 4 divisors (see below), whose sum is σ = 6534720. Its totient is φ = 6262348.

The previous prime is 6398519. The next prime is 6398537. The reversal of 6398533 is 3358936.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6398533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6398492 and 6398501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6398537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68023 + ... + 68116.

It is an arithmetic number, because the mean of its divisors is an integer number (1633680).

Almost surely, 2^6398533 is an apocalyptic number.

It is an amenable number.

6398533 is a deficient number, since it is larger than the sum of its proper divisors (136187).

6398533 is a wasteful number, since it uses less digits than its factorization.

6398533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136186.

The product of its digits is 58320, while the sum is 37.

The square root of 6398533 is about 2529.5321701848. The cubic root of 6398533 is about 185.6493664046.

It can be divided in two parts, 63 and 98533, that added together give a square (98596 = 314²).

The spelling of 6398533 in words is "six million, three hundred ninety-eight thousand, five hundred thirty-three".