627988477 has 2 divisors, whose sum is σ = 627988478. Its totient is φ = 627988476.

The previous prime is 627988441. The next prime is 627988519. The reversal of 627988477 is 774889726.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 362102841 + 265885636 = 19029^2 + 16306^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-627988477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (627988577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313994238 + 313994239.

It is an arithmetic number, because the mean of its divisors is an integer number (313994239).

Almost surely, 2^627988477 is an apocalyptic number.

It is an amenable number.

627988477 is a deficient number, since it is larger than the sum of its proper divisors (1).

627988477 is an equidigital number, since it uses as much as digits as its factorization.

627988477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9483264, while the sum is 58.

The square root of 627988477 is about 25059.6982623494. The cubic root of 627988477 is about 856.3485334456.

The spelling of 627988477 in words is "six hundred twenty-seven million, nine hundred eighty-eight thousand, four hundred seventy-seven".