412168661 has 2 divisors, whose sum is σ = 412168662. Its totient is φ = 412168660.

The previous prime is 412168649. The next prime is 412168663. The reversal of 412168661 is 166861214.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 342028036 + 70140625 = 18494^2 + 8375^2 .

It is a cyclic number.

It is not a de Polignac number, because 412168661 - 2⁶ = 412168597 is a prime.

It is a super-2 number, since 2×412168661² = 339766010221065842, which contains 22 as substring.

Together with 412168663, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (412168663) 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, 206084330 + 206084331.

It is an arithmetic number, because the mean of its divisors is an integer number (206084331).

Almost surely, 2^412168661 is an apocalyptic number.

It is an amenable number.

412168661 is a deficient number, since it is larger than the sum of its proper divisors (1).

412168661 is an equidigital number, since it uses as much as digits as its factorization.

412168661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 35.

The square root of 412168661 is about 20301.9373706058. The cubic root of 412168661 is about 744.2034102214.

The spelling of 412168661 in words is "four hundred twelve million, one hundred sixty-eight thousand, six hundred sixty-one".