6411961 has 2 divisors, whose sum is σ = 6411962. Its totient is φ = 6411960.

The previous prime is 6411953. The next prime is 6411971. The reversal of 6411961 is 1691146.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3240000 + 3171961 = 1800^2 + 1781^2 .

It is a cyclic number.

It is not a de Polignac number, because 6411961 - 2³ = 6411953 is a prime.

It is a super-2 number, since 2×6411961² = 82226487731042, which contains 22 as substring.

6411961 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (6411901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3205980 + 3205981.

It is an arithmetic number, because the mean of its divisors is an integer number (3205981).

Almost surely, 2^6411961 is an apocalyptic number.

It is an amenable number.

6411961 is a deficient number, since it is larger than the sum of its proper divisors (1).

6411961 is an equidigital number, since it uses as much as digits as its factorization.

6411961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 28.

The square root of 6411961 is about 2532.1850248353. The cubic root of 6411961 is about 185.7791439568.

The spelling of 6411961 in words is "six million, four hundred eleven thousand, nine hundred sixty-one".