626420447 has 2 divisors, whose sum is σ = 626420448. Its totient is φ = 626420446.

The previous prime is 626420429. The next prime is 626420477. The reversal of 626420447 is 744024626.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 626420447 - 2⁶ = 626420383 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (626420477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313210223 + 313210224.

It is an arithmetic number, because the mean of its divisors is an integer number (313210224).

Almost surely, 2^626420447 is an apocalyptic number.

626420447 is a deficient number, since it is larger than the sum of its proper divisors (1).

626420447 is an equidigital number, since it uses as much as digits as its factorization.

626420447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 35.

The square root of 626420447 is about 25028.3928169589. The cubic root of 626420447 is about 855.6351979875.

The spelling of 626420447 in words is "six hundred twenty-six million, four hundred twenty thousand, four hundred forty-seven".