6421450 has 36 divisors (see below), whose sum is σ = 13899222. Its totient is φ = 2200800.

The previous prime is 6421421. The next prime is 6421477. The reversal of 6421450 is 541246.

It can be written as a sum of positive squares in 3 ways, for example, as 5631129 + 790321 = 2373^2 + 889^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1140 + ... + 3760.

Almost surely, 2^6421450 is an apocalyptic number.

6421450 is an abundant number, since it is smaller than the sum of its proper divisors (7477772).

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

6421450 is a wasteful number, since it uses less digits than its factorization.

6421450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2647 (or 2635 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 6421450 is about 2534.0580103857. The cubic root of 6421450 is about 185.8707430479.

Adding to 6421450 its reverse (541246), we get a palindrome (6962696).

The spelling of 6421450 in words is "six million, four hundred twenty-one thousand, four hundred fifty".