647075041 has 2 divisors, whose sum is σ = 647075042. Its totient is φ = 647075040.

The previous prime is 647074979. The next prime is 647075071. The reversal of 647075041 is 140570746.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 342398016 + 304677025 = 18504^2 + 17455^2 .

It is a cyclic number.

It is not a de Polignac number, because 647075041 - 2⁷ = 647074913 is a prime.

It is a super-3 number, since 3×647075041³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 647074988 and 647075006.

It is not a weakly prime, because it can be changed into another prime (647075071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323537520 + 323537521.

It is an arithmetic number, because the mean of its divisors is an integer number (323537521).

Almost surely, 2^647075041 is an apocalyptic number.

It is an amenable number.

647075041 is a deficient number, since it is larger than the sum of its proper divisors (1).

647075041 is an equidigital number, since it uses as much as digits as its factorization.

647075041 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 647075041 is about 25437.6697242495. The cubic root of 647075041 is about 864.9378110257.

The spelling of 647075041 in words is "six hundred forty-seven million, seventy-five thousand, forty-one".