6450990546 has 128 divisors (see below), whose sum is σ = 17692286976. Its totient is φ = 1513716480.

The previous prime is 6450990541. The next prime is 6450990551.

6450990546 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (6450990541) and next prime (6450990551).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6450990495 and 6450990504.

It is not an unprimeable number, because it can be changed into a prime (6450990541) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 270856 + ... + 293708.

It is an arithmetic number, because the mean of its divisors is an integer number (138220992).

Almost surely, 2^6450990546 is an apocalyptic number.

6450990546 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 6450990546, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8846143488).

6450990546 is an abundant number, since it is smaller than the sum of its proper divisors (11241296430).

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

6450990546 is a wasteful number, since it uses less digits than its factorization.

6450990546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22936.

The product of its (nonzero) digits is 1166400, while the sum is 48.

The square root of 6450990546 is about 80318.0586543275. The cubic root of 6450990546 is about 1861.5532700964.

The spelling of 6450990546 in words is "six billion, four hundred fifty million, nine hundred ninety thousand, five hundred forty-six".