6426561 has 8 divisors (see below), whose sum is σ = 9072864. Its totient is φ = 4032320.

The previous prime is 6426559. The next prime is 6426569. The reversal of 6426561 is 1656246.

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 6426561 - 2¹ = 6426559 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6426569) 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, 62955 + ... + 63056.

It is an arithmetic number, because the mean of its divisors is an integer number (1134108).

Almost surely, 2^6426561 is an apocalyptic number.

It is an amenable number.

6426561 is a deficient number, since it is larger than the sum of its proper divisors (2646303).

6426561 is a wasteful number, since it uses less digits than its factorization.

6426561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126031.

The product of its digits is 8640, while the sum is 30.

The square root of 6426561 is about 2535.0662713231. The cubic root of 6426561 is about 185.9200430990.

The spelling of 6426561 in words is "six million, four hundred twenty-six thousand, five hundred sixty-one".