647190263 has 2 divisors, whose sum is σ = 647190264. Its totient is φ = 647190262.

The previous prime is 647190241. The next prime is 647190277. The reversal of 647190263 is 362091746.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 647190263 - 2¹⁶ = 647124727 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (647190223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323595131 + 323595132.

It is an arithmetic number, because the mean of its divisors is an integer number (323595132).

Almost surely, 2^647190263 is an apocalyptic number.

647190263 is a deficient number, since it is larger than the sum of its proper divisors (1).

647190263 is an equidigital number, since it uses as much as digits as its factorization.

647190263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 647190263 is about 25439.9344142236. The cubic root of 647190263 is about 864.9891466223.

The spelling of 647190263 in words is "six hundred forty-seven million, one hundred ninety thousand, two hundred sixty-three".