647052127 has 2 divisors, whose sum is σ = 647052128. Its totient is φ = 647052126.

The previous prime is 647052121. The next prime is 647052151. The reversal of 647052127 is 721250746.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-647052127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 647052092 and 647052101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (647052121) 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, 323526063 + 323526064.

It is an arithmetic number, because the mean of its divisors is an integer number (323526064).

Almost surely, 2^647052127 is an apocalyptic number.

647052127 is a deficient number, since it is larger than the sum of its proper divisors (1).

647052127 is an equidigital number, since it uses as much as digits as its factorization.

647052127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 647052127 is about 25437.2193252329. The cubic root of 647052127 is about 864.9276012779.

The spelling of 647052127 in words is "six hundred forty-seven million, fifty-two thousand, one hundred twenty-seven".