6507221472 has 72 divisors (see below), whose sum is σ = 18712905120. Its totient is φ = 2144693760.

The previous prime is 6507221467. The next prime is 6507221473. The reversal of 6507221472 is 2741227056.

It is a happy number.

6507221472 is a `hidden beast` number, since 6 + 507 + 2 + 2 + 147 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6507221473) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101304 + ... + 152567.

It is an arithmetic number, because the mean of its divisors is an integer number (259901460).

Almost surely, 2^6507221472 is an apocalyptic number.

It is an amenable number.

6507221472 is an abundant number, since it is smaller than the sum of its proper divisors (12205683648).

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

6507221472 is a wasteful number, since it uses less digits than its factorization.

6507221472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253976 (or 253965 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 6507221472 is about 80667.3507188627. The cubic root of 6507221472 is about 1866.9464565870.

The spelling of 6507221472 in words is "six billion, five hundred seven million, two hundred twenty-one thousand, four hundred seventy-two".