6621347 has 8 divisors (see below), whose sum is σ = 7064496. Its totient is φ = 6184192.

The previous prime is 6621341. The next prime is 6621353. The reversal of 6621347 is 7431266.

It is an interprime number because it is at equal distance from previous prime (6621341) and next prime (6621353).

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

It is not a de Polignac number, because 6621347 - 2⁴ = 6621331 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6621341) 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, 908 + ... + 3750.

It is an arithmetic number, because the mean of its divisors is an integer number (883062).

Almost surely, 2^6621347 is an apocalyptic number.

6621347 is a deficient number, since it is larger than the sum of its proper divisors (443149).

6621347 is a wasteful number, since it uses less digits than its factorization.

6621347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2997.

The product of its digits is 6048, while the sum is 29.

The square root of 6621347 is about 2573.1978159481. The cubic root of 6621347 is about 187.7797613345.

The spelling of 6621347 in words is "six million, six hundred twenty-one thousand, three hundred forty-seven".