6642017 has 4 divisors (see below), whose sum is σ = 6664980. Its totient is φ = 6619056.

The previous prime is 6642007. The next prime is 6642059. The reversal of 6642017 is 7102466.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6370576 + 271441 = 2524^2 + 521^2 .

It is a cyclic number.

It is not a de Polignac number, because 6642017 - 2⁶ = 6641953 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6642007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11042 + ... + 11627.

It is an arithmetic number, because the mean of its divisors is an integer number (1666245).

Almost surely, 2^6642017 is an apocalyptic number.

It is an amenable number.

6642017 is a deficient number, since it is larger than the sum of its proper divisors (22963).

6642017 is a wasteful number, since it uses less digits than its factorization.

6642017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22962.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 6642017 is about 2577.2110895307. The cubic root of 6642017 is about 187.9749570536.

The spelling of 6642017 in words is "six million, six hundred forty-two thousand, seventeen".