6499968 has 32 divisors (see below), whose sum is σ = 17266560. Its totient is φ = 2166528.

The previous prime is 6499949. The next prime is 6499991. The reversal of 6499968 is 8699946.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 6499968.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8080 + ... + 8847.

It is an arithmetic number, because the mean of its divisors is an integer number (539580).

Almost surely, 2^6499968 is an apocalyptic number.

It is an amenable number.

6499968 is an abundant number, since it is smaller than the sum of its proper divisors (10766592).

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

6499968 is a wasteful number, since it uses less digits than its factorization.

6499968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16944 (or 16932 counting only the distinct ones).

The product of its digits is 839808, while the sum is 51.

The square root of 6499968 is about 2549.5034810723. The cubic root of 6499968 is about 186.6252515830.

The spelling of 6499968 in words is "six million, four hundred ninety-nine thousand, nine hundred sixty-eight".