6443261 has 8 divisors (see below), whose sum is σ = 7399200. Its totient is φ = 5549040.

The previous prime is 6443231. The next prime is 6443287. The reversal of 6443261 is 1623446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6443261 - 2¹⁰ = 6442237 is a prime.

It is a super-2 number, since 2×6443261² = 83031224628242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6443261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6443231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15206 + ... + 15623.

It is an arithmetic number, because the mean of its divisors is an integer number (924900).

Almost surely, 2^6443261 is an apocalyptic number.

It is an amenable number.

6443261 is a deficient number, since it is larger than the sum of its proper divisors (955939).

6443261 is a wasteful number, since it uses less digits than its factorization.

6443261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30859.

The product of its digits is 3456, while the sum is 26.

The square root of 6443261 is about 2538.3579337832. The cubic root of 6443261 is about 186.0809471539.

The spelling of 6443261 in words is "six million, four hundred forty-three thousand, two hundred sixty-one".