627420881 has 2 divisors, whose sum is σ = 627420882. Its totient is φ = 627420880.

The previous prime is 627420851. The next prime is 627420883. The reversal of 627420881 is 188024726.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 506970256 + 120450625 = 22516^2 + 10975^2 .

It is a cyclic number.

It is not a de Polignac number, because 627420881 - 2¹⁰ = 627419857 is a prime.

It is a super-2 number, since 2×627420881² = 787313923829632322, which contains 22 as substring.

Together with 627420883, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (627420883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313710440 + 313710441.

It is an arithmetic number, because the mean of its divisors is an integer number (313710441).

Almost surely, 2^627420881 is an apocalyptic number.

It is an amenable number.

627420881 is a deficient number, since it is larger than the sum of its proper divisors (1).

627420881 is an equidigital number, since it uses as much as digits as its factorization.

627420881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 627420881 is about 25048.3708252653. The cubic root of 627420881 is about 856.0904573118.

The spelling of 627420881 in words is "six hundred twenty-seven million, four hundred twenty thousand, eight hundred eighty-one".