226717397 has 2 divisors, whose sum is σ = 226717398. Its totient is φ = 226717396.

The previous prime is 226717373. The next prime is 226717409. The reversal of 226717397 is 793717622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 213130801 + 13586596 = 14599^2 + 3686^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-226717397 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 (226713397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113358698 + 113358699.

It is an arithmetic number, because the mean of its divisors is an integer number (113358699).

Almost surely, 2^226717397 is an apocalyptic number.

It is an amenable number.

226717397 is a deficient number, since it is larger than the sum of its proper divisors (1).

226717397 is an equidigital number, since it uses as much as digits as its factorization.

226717397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 222264, while the sum is 44.

The square root of 226717397 is about 15057.1377426123. The cubic root of 226717397 is about 609.7637686012.

The spelling of 226717397 in words is "two hundred twenty-six million, seven hundred seventeen thousand, three hundred ninety-seven".