405568601 has 2 divisors, whose sum is σ = 405568602. Its totient is φ = 405568600.

The previous prime is 405568589. The next prime is 405568607. The reversal of 405568601 is 106865504.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 399040576 + 6528025 = 19976^2 + 2555^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-405568601 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (405568607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202784300 + 202784301.

It is an arithmetic number, because the mean of its divisors is an integer number (202784301).

Almost surely, 2^405568601 is an apocalyptic number.

It is an amenable number.

405568601 is a deficient number, since it is larger than the sum of its proper divisors (1).

405568601 is an equidigital number, since it uses as much as digits as its factorization.

405568601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 405568601 is about 20138.7338479856. The cubic root of 405568601 is about 740.2097049937.

The spelling of 405568601 in words is "four hundred five million, five hundred sixty-eight thousand, six hundred one".