417073661 has 2 divisors, whose sum is σ = 417073662. Its totient is φ = 417073660.

The previous prime is 417073633. The next prime is 417073663. The reversal of 417073661 is 166370714.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 408282436 + 8791225 = 20206^2 + 2965^2 .

It is a cyclic number.

It is not a de Polignac number, because 417073661 - 2¹⁰ = 417072637 is a prime.

Together with 417073663, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_22197365 and since 417073661 and 22197365 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (417073663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 208536830 + 208536831.

It is an arithmetic number, because the mean of its divisors is an integer number (208536831).

Almost surely, 2^417073661 is an apocalyptic number.

It is an amenable number.

417073661 is a deficient number, since it is larger than the sum of its proper divisors (1).

417073661 is an equidigital number, since it uses as much as digits as its factorization.

417073661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 417073661 is about 20422.3813743647. The cubic root of 417073661 is about 747.1438994667.

The spelling of 417073661 in words is "four hundred seventeen million, seventy-three thousand, six hundred sixty-one".