647404283 has 2 divisors, whose sum is σ = 647404284. Its totient is φ = 647404282.

The previous prime is 647404267. The next prime is 647404291. The reversal of 647404283 is 382404746.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 647404283 - 2⁴ = 647404267 is a prime.

It is not a weakly prime, because it can be changed into another prime (647404213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323702141 + 323702142.

It is an arithmetic number, because the mean of its divisors is an integer number (323702142).

Almost surely, 2^647404283 is an apocalyptic number.

647404283 is a deficient number, since it is larger than the sum of its proper divisors (1).

647404283 is an equidigital number, since it uses as much as digits as its factorization.

647404283 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129024, while the sum is 38.

The square root of 647404283 is about 25444.1404452970. The cubic root of 647404283 is about 865.0844841580.

The spelling of 647404283 in words is "six hundred forty-seven million, four hundred four thousand, two hundred eighty-three".