6490000 has 100 divisors (see below), whose sum is σ = 17431920. Its totient is φ = 2320000.

The previous prime is 6489991. The next prime is 6490007. The reversal of 6490000 is 946.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (100).

It is a self number, because there is not a number n which added to its sum of digits gives 6490000.

It is not an unprimeable number, because it can be changed into a prime (6490007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 109971 + ... + 110029.

Almost surely, 2^6490000 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 6490000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8715960).

6490000 is an abundant number, since it is smaller than the sum of its proper divisors (10941920).

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

6490000 is a wasteful number, since it uses less digits than its factorization.

6490000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 6490000 is about 2547.5478405714. The cubic root of 6490000 is about 186.5298033049.

Adding to 6490000 its reverse (946), we get a palindrome (6490946).

It can be divided in two parts, 64 and 90000, that multiplied together give a square (5760000 = 2400²).

The spelling of 6490000 in words is "six million, four hundred ninety thousand".