6406265 has 4 divisors (see below), whose sum is σ = 7687524. Its totient is φ = 5125008.

The previous prime is 6406247. The next prime is 6406307. The reversal of 6406265 is 5626046.

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 4239481 + 2166784 = 2059^2 + 1472^2 .

It is a cyclic number.

It is not a de Polignac number, because 6406265 - 2¹² = 6402169 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 640622 + ... + 640631.

It is an arithmetic number, because the mean of its divisors is an integer number (1921881).

Almost surely, 2^6406265 is an apocalyptic number.

It is an amenable number.

6406265 is a deficient number, since it is larger than the sum of its proper divisors (1281259).

6406265 is a wasteful number, since it uses less digits than its factorization.

6406265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281258.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 6406265 is about 2531.0600546016. The cubic root of 6406265 is about 185.7241159913.

The spelling of 6406265 in words is "six million, four hundred six thousand, two hundred sixty-five".