6484005840 has 80 divisors (see below), whose sum is σ = 21646614528. Its totient is φ = 1596062208.

The previous prime is 6484005823. The next prime is 6484005841. The reversal of 6484005840 is 485004846.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6484005841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1035984 + ... + 1042223.

Almost surely, 2^6484005840 is an apocalyptic number.

6484005840 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6484005840 is an abundant number, since it is smaller than the sum of its proper divisors (15162608688).

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

6484005840 is a wasteful number, since it uses less digits than its factorization.

6484005840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2078236 (or 2078230 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 39.

The square root of 6484005840 is about 80523.3248195826. The cubic root of 6484005840 is about 1864.7235934574.

The spelling of 6484005840 in words is "six billion, four hundred eighty-four million, five thousand, eight hundred forty".