1627398671 has 2 divisors, whose sum is σ = 1627398672. Its totient is φ = 1627398670.

The previous prime is 1627398653. The next prime is 1627398673. The reversal of 1627398671 is 1768937261.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1627398671 - 2¹⁰ = 1627397647 is a prime.

Together with 1627398673, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1627398673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 813699335 + 813699336.

It is an arithmetic number, because the mean of its divisors is an integer number (813699336).

Almost surely, 2^1627398671 is an apocalyptic number.

1627398671 is a deficient number, since it is larger than the sum of its proper divisors (1).

1627398671 is an equidigital number, since it uses as much as digits as its factorization.

1627398671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 50.

The square root of 1627398671 is about 40341.0296224576. The cubic root of 1627398671 is about 1176.2455290382.

The spelling of 1627398671 in words is "one billion, six hundred twenty-seven million, three hundred ninety-eight thousand, six hundred seventy-one".