627468421 has 2 divisors, whose sum is σ = 627468422. Its totient is φ = 627468420.

The previous prime is 627468409. The next prime is 627468503. The reversal of 627468421 is 124864726.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 419676196 + 207792225 = 20486^2 + 14415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-627468421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (627462421) 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, 313734210 + 313734211.

It is an arithmetic number, because the mean of its divisors is an integer number (313734211).

Almost surely, 2^627468421 is an apocalyptic number.

It is an amenable number.

627468421 is a deficient number, since it is larger than the sum of its proper divisors (1).

627468421 is an equidigital number, since it uses as much as digits as its factorization.

627468421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 40.

The square root of 627468421 is about 25049.3197712034. The cubic root of 627468421 is about 856.1120789025.

The spelling of 627468421 in words is "six hundred twenty-seven million, four hundred sixty-eight thousand, four hundred twenty-one".