415435661 has 2 divisors, whose sum is σ = 415435662. Its totient is φ = 415435660.

The previous prime is 415435639. The next prime is 415435663. The reversal of 415435661 is 166534514.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 323640100 + 91795561 = 17990^2 + 9581^2 .

It is a cyclic number.

It is not a de Polignac number, because 415435661 - 2¹⁰ = 415434637 is a prime.

Together with 415435663, 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 (415435663) 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, 207717830 + 207717831.

It is an arithmetic number, because the mean of its divisors is an integer number (207717831).

Almost surely, 2^415435661 is an apocalyptic number.

It is an amenable number.

415435661 is a deficient number, since it is larger than the sum of its proper divisors (1).

415435661 is an equidigital number, since it uses as much as digits as its factorization.

415435661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 35.

The square root of 415435661 is about 20382.2388613224. The cubic root of 415435661 is about 746.1645142423.

The spelling of 415435661 in words is "four hundred fifteen million, four hundred thirty-five thousand, six hundred sixty-one".