6461893 has 2 divisors, whose sum is σ = 6461894. Its totient is φ = 6461892.

The previous prime is 6461891. The next prime is 6461899. The reversal of 6461893 is 3981646.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6441444 + 20449 = 2538^2 + 143^2 .

It is a cyclic number.

It is not a de Polignac number, because 6461893 - 2¹ = 6461891 is a prime.

It is a super-2 number, since 2×6461893² = 83512122286898, which contains 22 as substring.

Together with 6461891, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6461891) 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 as a sum of consecutive naturals, namely, 3230946 + 3230947.

It is an arithmetic number, because the mean of its divisors is an integer number (3230947).

Almost surely, 2^6461893 is an apocalyptic number.

It is an amenable number.

6461893 is a deficient number, since it is larger than the sum of its proper divisors (1).

6461893 is an equidigital number, since it uses as much as digits as its factorization.

6461893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 37.

The square root of 6461893 is about 2542.0253735948. The cubic root of 6461893 is about 186.2601381806.

The spelling of 6461893 in words is "six million, four hundred sixty-one thousand, eight hundred ninety-three".