6406263 has 24 divisors (see below), whose sum is σ = 10094160. Its totient is φ = 4014720.

The previous prime is 6406247. The next prime is 6406307. The reversal of 6406263 is 3626046.

It is not a de Polignac number, because 6406263 - 2⁴ = 6406247 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a d-powerful number, because it can be written as 6² + 4¹¹ + 0 + 6⁶ + 2¹⁹ + 6⁶ + 3¹³ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6404263) 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 23 ways as a sum of consecutive naturals, for example, 7393 + ... + 8213.

It is an arithmetic number, because the mean of its divisors is an integer number (420590).

Almost surely, 2^6406263 is an apocalyptic number.

6406263 is a deficient number, since it is larger than the sum of its proper divisors (3687897).

6406263 is a wasteful number, since it uses less digits than its factorization.

6406263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864 (or 841 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 6406263 is about 2531.0596595102. The cubic root of 6406263 is about 185.7240966640.

It can be divided in two parts, 640 and 6263, that added together give a triangular number (6903 = T₁₁₇).

The spelling of 6406263 in words is "six million, four hundred six thousand, two hundred sixty-three".