6450990504 has 128 divisors (see below), whose sum is σ = 20245248000. Its totient is φ = 1670194944.

The previous prime is 6450990473. The next prime is 6450990541. The reversal of 6450990504 is 4050990546.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29482 + ... + 117350.

It is an arithmetic number, because the mean of its divisors is an integer number (158166000).

Almost surely, 2^6450990504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6450990504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10122624000).

6450990504 is an abundant number, since it is smaller than the sum of its proper divisors (13794257496).

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

6450990504 is a wasteful number, since it uses less digits than its factorization.

6450990504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87927 (or 87923 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 6450990504 is about 80318.0583928670. The cubic root of 6450990504 is about 1861.5532660565.

Adding to 6450990504 its sum of digits (42), we get a palindrome (6450990546).

The spelling of 6450990504 in words is "six billion, four hundred fifty million, nine hundred ninety thousand, five hundred four".