6681453 has 8 divisors (see below), whose sum is σ = 8997216. Its totient is φ = 4410000.

The previous prime is 6681443. The next prime is 6681481. The reversal of 6681453 is 3541866.

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

It is not a de Polignac number, because 6681453 - 2⁵ = 6681421 is a prime.

It is a Curzon number.

6681453 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6681403) 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, 10723 + ... + 11328.

It is an arithmetic number, because the mean of its divisors is an integer number (1124652).

Almost surely, 2^6681453 is an apocalyptic number.

It is an amenable number.

6681453 is a deficient number, since it is larger than the sum of its proper divisors (2315763).

6681453 is a wasteful number, since it uses less digits than its factorization.

6681453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22155.

The product of its digits is 17280, while the sum is 33.

The square root of 6681453 is about 2584.8506726695. The cubic root of 6681453 is about 188.3462477548.

The spelling of 6681453 in words is "six million, six hundred eighty-one thousand, four hundred fifty-three".