6461321 has 4 divisors (see below), whose sum is σ = 6742272. Its totient is φ = 6180372.

The previous prime is 6461317. The next prime is 6461333. The reversal of 6461321 is 1231646.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6461321 - 2² = 6461317 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 280927 = 6461321 / (6 + 4 + 6 + 1 + 3 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6461341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140441 + ... + 140486.

It is an arithmetic number, because the mean of its divisors is an integer number (1685568).

Almost surely, 2^6461321 is an apocalyptic number.

It is an amenable number.

6461321 is a deficient number, since it is larger than the sum of its proper divisors (280951).

6461321 is a wasteful number, since it uses less digits than its factorization.

6461321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280950.

The product of its digits is 864, while the sum is 23.

The square root of 6461321 is about 2541.9128623932. The cubic root of 6461321 is about 186.2546421677.

Adding to 6461321 its reverse (1231646), we get a palindrome (7692967).

The spelling of 6461321 in words is "six million, four hundred sixty-one thousand, three hundred twenty-one".