6747521 has 8 divisors (see below), whose sum is σ = 7794144. Its totient is φ = 5773120.

The previous prime is 6747511. The next prime is 6747523. The reversal of 6747521 is 1257476.

6747521 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6747521 - 2²² = 2553217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6747523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17855 + ... + 18228.

It is an arithmetic number, because the mean of its divisors is an integer number (974268).

Almost surely, 2^6747521 is an apocalyptic number.

It is an amenable number.

6747521 is a deficient number, since it is larger than the sum of its proper divisors (1046623).

6747521 is a wasteful number, since it uses less digits than its factorization.

6747521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36111.

The product of its digits is 11760, while the sum is 32.

The square root of 6747521 is about 2597.5990837695. The cubic root of 6747521 is about 188.9650187678.

The spelling of 6747521 in words is "six million, seven hundred forty-seven thousand, five hundred twenty-one".