6442263 has 12 divisors (see below), whose sum is σ = 9626760. Its totient is φ = 4146576.

The previous prime is 6442259. The next prime is 6442279. The reversal of 6442263 is 3622446.

It is not a de Polignac number, because 6442263 - 2² = 6442259 is a prime.

It is a super-2 number, since 2×6442263² = 83005505122338, which contains 22 as substring.

It is an Ulam number.

It is a d-powerful number, because it can be written as 6 + 4⁶ + 4¹¹ + 2⁵ + 2¹⁵ + 6⁸ + 3¹² .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6442223) 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 11 ways as a sum of consecutive naturals, for example, 12081 + ... + 12602.

It is an arithmetic number, because the mean of its divisors is an integer number (802230).

Almost surely, 2^6442263 is an apocalyptic number.

6442263 is a deficient number, since it is larger than the sum of its proper divisors (3184497).

6442263 is a wasteful number, since it uses less digits than its factorization.

6442263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24718 (or 24715 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

The square root of 6442263 is about 2538.1613423894. The cubic root of 6442263 is about 186.0713392667.

The spelling of 6442263 in words is "six million, four hundred forty-two thousand, two hundred sixty-three".