648000047 has 2 divisors, whose sum is σ = 648000048. Its totient is φ = 648000046.

The previous prime is 647999993. The next prime is 648000079. The reversal of 648000047 is 740000846.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-648000047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 647999983 and 648000019.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (645000047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324000023 + 324000024.

It is an arithmetic number, because the mean of its divisors is an integer number (324000024).

Almost surely, 2^648000047 is an apocalyptic number.

648000047 is a deficient number, since it is larger than the sum of its proper divisors (1).

648000047 is an equidigital number, since it uses as much as digits as its factorization.

648000047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 648000047 is about 25455.8450458829. The cubic root of 648000047 is about 865.3497631060.

The spelling of 648000047 in words is "six hundred forty-eight million, forty-seven", and thus it is an aban number.