647615041 has 2 divisors, whose sum is σ = 647615042. Its totient is φ = 647615040.

The previous prime is 647615011. The next prime is 647615063. The reversal of 647615041 is 140516746.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 440370225 + 207244816 = 20985^2 + 14396^2 .

It is a cyclic number.

It is not a de Polignac number, because 647615041 - 2¹⁹ = 647090753 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 647614988 and 647615006.

It is not a weakly prime, because it can be changed into another prime (647615011) 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, 323807520 + 323807521.

It is an arithmetic number, because the mean of its divisors is an integer number (323807521).

Almost surely, 2^647615041 is an apocalyptic number.

It is an amenable number.

647615041 is a deficient number, since it is larger than the sum of its proper divisors (1).

647615041 is an equidigital number, since it uses as much as digits as its factorization.

647615041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 647615041 is about 25448.2816905189. The cubic root of 647615041 is about 865.1783480693.

The spelling of 647615041 in words is "six hundred forty-seven million, six hundred fifteen thousand, forty-one".