634662403 has 2 divisors, whose sum is σ = 634662404. Its totient is φ = 634662402.

The previous prime is 634662383. The next prime is 634662449. The reversal of 634662403 is 304266436.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 634662403 - 2⁹ = 634661891 is a prime.

It is not a weakly prime, because it can be changed into another prime (634662703) 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, 317331201 + 317331202.

It is an arithmetic number, because the mean of its divisors is an integer number (317331202).

Almost surely, 2^634662403 is an apocalyptic number.

634662403 is a deficient number, since it is larger than the sum of its proper divisors (1).

634662403 is an equidigital number, since it uses as much as digits as its factorization.

634662403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 34.

The square root of 634662403 is about 25192.5068820076. The cubic root of 634662403 is about 859.3714548270.

The spelling of 634662403 in words is "six hundred thirty-four million, six hundred sixty-two thousand, four hundred three".