647711627 has 2 divisors, whose sum is σ = 647711628. Its totient is φ = 647711626.

The previous prime is 647711609. The next prime is 647711639. The reversal of 647711627 is 726117746.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 647711627 - 2¹⁰ = 647710603 is a prime.

It is not a weakly prime, because it can be changed into another prime (647711657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323855813 + 323855814.

It is an arithmetic number, because the mean of its divisors is an integer number (323855814).

Almost surely, 2^647711627 is an apocalyptic number.

647711627 is a deficient number, since it is larger than the sum of its proper divisors (1).

647711627 is an equidigital number, since it uses as much as digits as its factorization.

647711627 is an evil number, because the sum of its binary digits is even.

The product of its digits is 98784, while the sum is 41.

The square root of 647711627 is about 25450.1793117455. The cubic root of 647711627 is about 865.2213571394.

The spelling of 647711627 in words is "six hundred forty-seven million, seven hundred eleven thousand, six hundred twenty-seven".