6642797 has 4 divisors (see below), whose sum is σ = 7591776. Its totient is φ = 5693820.

The previous prime is 6642793. The next prime is 6642803. The reversal of 6642797 is 7972466.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6642797 - 2² = 6642793 is a prime.

It is a d-powerful number, because it can be written as 6⁵ + 6⁶ + 4 + 2³ + 7⁷ + 9 + 7⁸ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6642793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 474479 + ... + 474492.

It is an arithmetic number, because the mean of its divisors is an integer number (1897944).

Almost surely, 2^6642797 is an apocalyptic number.

It is an amenable number.

6642797 is a deficient number, since it is larger than the sum of its proper divisors (948979).

6642797 is an equidigital number, since it uses as much as digits as its factorization.

6642797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948978.

The product of its digits is 127008, while the sum is 41.

The square root of 6642797 is about 2577.3624114587. The cubic root of 6642797 is about 187.9823149956.

The spelling of 6642797 in words is "six million, six hundred forty-two thousand, seven hundred ninety-seven".