6461761 has 2 divisors, whose sum is σ = 6461762. Its totient is φ = 6461760.

The previous prime is 6461759. The next prime is 6461773. The reversal of 6461761 is 1671646.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4000000 + 2461761 = 2000^2 + 1569^2 .

It is a cyclic number.

It is not a de Polignac number, because 6461761 - 2¹ = 6461759 is a prime.

It is a super-2 number, since 2×6461761² = 83508710442242, which contains 22 as substring.

Together with 6461759, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6461261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3230880 + 3230881.

It is an arithmetic number, because the mean of its divisors is an integer number (3230881).

Almost surely, 2^6461761 is an apocalyptic number.

It is an amenable number.

6461761 is a deficient number, since it is larger than the sum of its proper divisors (1).

6461761 is an equidigital number, since it uses as much as digits as its factorization.

6461761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 31.

The square root of 6461761 is about 2541.9994099134. Note that the first 3 decimals coincide. The cubic root of 6461761 is about 186.2588698987.

The spelling of 6461761 in words is "six million, four hundred sixty-one thousand, seven hundred sixty-one".