411822661 has 2 divisors, whose sum is σ = 411822662. Its totient is φ = 411822660.

The previous prime is 411822643. The next prime is 411822673. The reversal of 411822661 is 166228114.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 388484100 + 23338561 = 19710^2 + 4831^2 .

It is a cyclic number.

It is not a de Polignac number, because 411822661 - 2²¹ = 409725509 is a prime.

It is a super-2 number, since 2×411822661² = 339195808226241842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (411822611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205911330 + 205911331.

It is an arithmetic number, because the mean of its divisors is an integer number (205911331).

Almost surely, 2^411822661 is an apocalyptic number.

It is an amenable number.

411822661 is a deficient number, since it is larger than the sum of its proper divisors (1).

411822661 is an equidigital number, since it uses as much as digits as its factorization.

411822661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 31.

The square root of 411822661 is about 20293.4142272807. The cubic root of 411822661 is about 743.9951083860.

The spelling of 411822661 in words is "four hundred eleven million, eight hundred twenty-two thousand, six hundred sixty-one".