6450990547 has 8 divisors (see below), whose sum is σ = 6565536000. Its totient is φ = 6336982344.

The previous prime is 6450990541. The next prime is 6450990551. The reversal of 6450990547 is 7450990546.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6450990547 - 2³¹ = 4303506899 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6450990547.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110047 + ... + 158152.

It is an arithmetic number, because the mean of its divisors is an integer number (820692000).

Almost surely, 2^6450990547 is an apocalyptic number.

6450990547 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

6450990547 is a deficient number, since it is larger than the sum of its proper divisors (114545453).

6450990547 is a wasteful number, since it uses less digits than its factorization.

6450990547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268625.

The product of its (nonzero) digits is 1360800, while the sum is 49.

The square root of 6450990547 is about 80318.0586605528. The cubic root of 6450990547 is about 1861.5532701926.

Subtracting 6450990547 from its reverse (7450990546), we obtain a palindrome (999999999).

The spelling of 6450990547 in words is "six billion, four hundred fifty million, nine hundred ninety thousand, five hundred forty-seven".