626242403 has 2 divisors, whose sum is σ = 626242404. Its totient is φ = 626242402.

The previous prime is 626242373. The next prime is 626242417. The reversal of 626242403 is 304242626.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 626242403 - 2⁶ = 626242339 is a prime.

It is not a weakly prime, because it can be changed into another prime (626242433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313121201 + 313121202.

It is an arithmetic number, because the mean of its divisors is an integer number (313121202).

Almost surely, 2^626242403 is an apocalyptic number.

626242403 is a deficient number, since it is larger than the sum of its proper divisors (1).

626242403 is an equidigital number, since it uses as much as digits as its factorization.

626242403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 29.

The square root of 626242403 is about 25024.8357237365. The cubic root of 626242403 is about 855.5541261615.

The spelling of 626242403 in words is "six hundred twenty-six million, two hundred forty-two thousand, four hundred three".