226646345287 has 2 divisors, whose sum is σ = 226646345288. Its totient is φ = 226646345286.

The previous prime is 226646345257. The next prime is 226646345329. The reversal of 226646345287 is 782543646622.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-226646345287 is a prime.

It is a super-2 number, since 2×226646345287² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (226646345207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113323172643 + 113323172644.

It is an arithmetic number, because the mean of its divisors is an integer number (113323172644).

Almost surely, 2^226646345287 is an apocalyptic number.

226646345287 is a deficient number, since it is larger than the sum of its proper divisors (1).

226646345287 is an equidigital number, since it uses as much as digits as its factorization.

226646345287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23224320, while the sum is 55.

The spelling of 226646345287 in words is "two hundred twenty-six billion, six hundred forty-six million, three hundred forty-five thousand, two hundred eighty-seven".