647360471 has 2 divisors, whose sum is σ = 647360472. Its totient is φ = 647360470.

The previous prime is 647360431. The next prime is 647360477. The reversal of 647360471 is 174063746.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 647360471 - 2¹⁸ = 647098327 is a prime.

It is a super-3 number, since 3×647360471³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (647360477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323680235 + 323680236.

It is an arithmetic number, because the mean of its divisors is an integer number (323680236).

Almost surely, 2^647360471 is an apocalyptic number.

647360471 is a deficient number, since it is larger than the sum of its proper divisors (1).

647360471 is an equidigital number, since it uses as much as digits as its factorization.

647360471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 647360471 is about 25443.2794859468. The cubic root of 647360471 is about 865.0649693368.

The spelling of 647360471 in words is "six hundred forty-seven million, three hundred sixty thousand, four hundred seventy-one".