6426253 has 4 divisors (see below), whose sum is σ = 6445660. Its totient is φ = 6406848.

The previous prime is 6426247. The next prime is 6426257. The reversal of 6426253 is 3526246.

It is a happy number.

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 4678569 + 1747684 = 2163^2 + 1322^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6426253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6426257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9198 + ... + 9871.

It is an arithmetic number, because the mean of its divisors is an integer number (1611415).

Almost surely, 2^6426253 is an apocalyptic number.

It is an amenable number.

6426253 is a deficient number, since it is larger than the sum of its proper divisors (19407).

6426253 is a wasteful number, since it uses less digits than its factorization.

6426253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19406.

The product of its digits is 8640, while the sum is 28.

The square root of 6426253 is about 2535.0055226764. The cubic root of 6426253 is about 185.9170729107.

Subtracting from 6426253 its sum of digits (28), we obtain a square (6426225 = 2535²).

The spelling of 6426253 in words is "six million, four hundred twenty-six thousand, two hundred fifty-three".