6450 has 24 divisors (see below), whose sum is σ = 16368. Its totient is φ = 1680.

The previous prime is 6449. The next prime is 6451. The reversal of 6450 is 546.

It is an interprime number because it is at equal distance from previous prime (6449) and next prime (6451).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 6450.

It is not an unprimeable number, because it can be changed into a prime (6451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129 + ... + 171.

It is an arithmetic number, because the mean of its divisors is an integer number (682).

2⁶⁴⁵⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8184).

6450 is an abundant number, since it is smaller than the sum of its proper divisors (9918).

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

6450 is a wasteful number, since it uses less digits than its factorization.

6450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 6450 is about 80.3118920210. The cubic root of 6450 is about 18.6145798506.

Adding to 6450 its reverse (546), we get a palindrome (6996).

The spelling of 6450 in words is "six thousand, four hundred fifty".