627629491 has 2 divisors, whose sum is σ = 627629492. Its totient is φ = 627629490.

The previous prime is 627629473. The next prime is 627629501. The reversal of 627629491 is 194926726.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 627629491 - 2⁷ = 627629363 is a prime.

It is not a weakly prime, because it can be changed into another prime (627629461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313814745 + 313814746.

It is an arithmetic number, because the mean of its divisors is an integer number (313814746).

Almost surely, 2^627629491 is an apocalyptic number.

627629491 is a deficient number, since it is larger than the sum of its proper divisors (1).

627629491 is an equidigital number, since it uses as much as digits as its factorization.

627629491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 46.

The square root of 627629491 is about 25052.5346222693. The cubic root of 627629491 is about 856.1853267721.

The spelling of 627629491 in words is "six hundred twenty-seven million, six hundred twenty-nine thousand, four hundred ninety-one".