6461647 has 8 divisors (see below), whose sum is σ = 6589440. Its totient is φ = 6335160.

The previous prime is 6461627. The next prime is 6461657. The reversal of 6461647 is 7461646.

It is a happy number.

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 6461647 - 2¹⁵ = 6428879 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 (6461617) 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, 20622 + ... + 20932.

It is an arithmetic number, because the mean of its divisors is an integer number (823680).

Almost surely, 2^6461647 is an apocalyptic number.

6461647 is a deficient number, since it is larger than the sum of its proper divisors (127793).

6461647 is a wasteful number, since it uses less digits than its factorization.

6461647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653.

The product of its digits is 24192, while the sum is 34.

The square root of 6461647 is about 2541.9769865205. The cubic root of 6461647 is about 186.2577745505.

Subtracting 6461647 from its reverse (7461646), we obtain a palindrome (999999).

The spelling of 6461647 in words is "six million, four hundred sixty-one thousand, six hundred forty-seven".