647890911233 has 2 divisors, whose sum is σ = 647890911234. Its totient is φ = 647890911232.

The previous prime is 647890911209. The next prime is 647890911259. The reversal of 647890911233 is 332119098746.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 647601639169 + 289272064 = 804737^2 + 17008^2 .

It is a cyclic number.

It is not a de Polignac number, because 647890911233 - 2¹⁶ = 647890845697 is a prime.

It is not a weakly prime, because it can be changed into another prime (647890911433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323945455616 + 323945455617.

It is an arithmetic number, because the mean of its divisors is an integer number (323945455617).

Almost surely, 2^647890911233 is an apocalyptic number.

It is an amenable number.

647890911233 is a deficient number, since it is larger than the sum of its proper divisors (1).

647890911233 is an equidigital number, since it uses as much as digits as its factorization.

647890911233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1959552, while the sum is 53.

The spelling of 647890911233 in words is "six hundred forty-seven billion, eight hundred ninety million, nine hundred eleven thousand, two hundred thirty-three".