6500864 has 20 divisors (see below), whose sum is σ = 12990054. Its totient is φ = 3250176.

The previous prime is 6500861. The next prime is 6500873. The reversal of 6500864 is 4680056.

It can be written as a sum of positive squares in only one way, i.e., 6150400 + 350464 = 2480^2 + 592^2 .

It is a super-2 number, since 2×6500864² = 84522465492992, which contains 22 as substring.

It is an Ulam number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (6500861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5837 + ... + 6860.

Almost surely, 2^6500864 is an apocalyptic number.

6500864 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

6500864 is a deficient number, since it is larger than the sum of its proper divisors (6489190).

6500864 is an equidigital number, since it uses as much as digits as its factorization.

6500864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12715 (or 12699 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 6500864 is about 2549.6791955068. The cubic root of 6500864 is about 186.6338264223.

The spelling of 6500864 in words is "six million, five hundred thousand, eight hundred sixty-four".