6284640 has 48 divisors (see below), whose sum is σ = 19798128. Its totient is φ = 1675776.

The previous prime is 6284633. The next prime is 6284669. The reversal of 6284640 is 464826.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 6284598 and 6284607.

It is a congruent number.

It is an unprimeable number.

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, 6067 + ... + 7026.

It is an arithmetic number, because the mean of its divisors is an integer number (412461).

Almost surely, 2^6284640 is an apocalyptic number.

6284640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6284640 is an abundant number, since it is smaller than the sum of its proper divisors (13513488).

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

6284640 is a wasteful number, since it uses less digits than its factorization.

6284640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13111 (or 13103 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 6284640 is about 2506.9184270734. The cubic root of 6284640 is about 184.5412544259.

The spelling of 6284640 in words is "six million, two hundred eighty-four thousand, six hundred forty".