6622257 has 8 divisors (see below), whose sum is σ = 8845984. Its totient is φ = 4406688.

The previous prime is 6622211. The next prime is 6622283. The reversal of 6622257 is 7522266.

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

It is not a de Polignac number, because 6622257 - 2⁶ = 6622193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6622157) 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, 213 + ... + 3645.

It is an arithmetic number, because the mean of its divisors is an integer number (1105748).

Almost surely, 2^6622257 is an apocalyptic number.

It is an amenable number.

6622257 is a deficient number, since it is larger than the sum of its proper divisors (2223727).

6622257 is a wasteful number, since it uses less digits than its factorization.

6622257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4079.

The product of its digits is 10080, while the sum is 30.

The square root of 6622257 is about 2573.3746326565. The cubic root of 6622257 is about 187.7883633987.

Subtracting 6622257 from its reverse (7522266), we obtain a palindrome (900009).

The spelling of 6622257 in words is "six million, six hundred twenty-two thousand, two hundred fifty-seven".