6642263 has 4 divisors (see below), whose sum is σ = 6735888. Its totient is φ = 6548640.

The previous prime is 6642211. The next prime is 6642281. The reversal of 6642263 is 3622466.

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

It is a cyclic number.

It is not a de Polignac number, because 6642263 - 2⁸ = 6642007 is a prime.

It is a super-2 number, since 2×6642263² = 88239315522338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6642283) 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, 46706 + ... + 46847.

It is an arithmetic number, because the mean of its divisors is an integer number (1683972).

Almost surely, 2^6642263 is an apocalyptic number.

6642263 is a deficient number, since it is larger than the sum of its proper divisors (93625).

6642263 is an equidigital number, since it uses as much as digits as its factorization.

6642263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93624.

The product of its digits is 10368, while the sum is 29.

The square root of 6642263 is about 2577.2588150979. The cubic root of 6642263 is about 187.9772776975.

The spelling of 6642263 in words is "six million, six hundred forty-two thousand, two hundred sixty-three".