408145663 has 2 divisors, whose sum is σ = 408145664. Its totient is φ = 408145662.

The previous prime is 408145609. The next prime is 408145667. The reversal of 408145663 is 366541804.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 408145663 - 2⁹ = 408145151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (408145667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204072831 + 204072832.

It is an arithmetic number, because the mean of its divisors is an integer number (204072832).

Almost surely, 2^408145663 is an apocalyptic number.

408145663 is a deficient number, since it is larger than the sum of its proper divisors (1).

408145663 is an equidigital number, since it uses as much as digits as its factorization.

408145663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 408145663 is about 20202.6152514965. The cubic root of 408145663 is about 741.7742082215.

The spelling of 408145663 in words is "four hundred eight million, one hundred forty-five thousand, six hundred sixty-three".