445667197 has 2 divisors, whose sum is σ = 445667198. Its totient is φ = 445667196.

The previous prime is 445667161. The next prime is 445667269. The reversal of 445667197 is 791766544.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 409414756 + 36252441 = 20234^2 + 6021^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445667197 is a prime.

It is a super-3 number, since 3×445667197³ (a number of 27 digits) contains 333 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 445667197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445667107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222833598 + 222833599.

It is an arithmetic number, because the mean of its divisors is an integer number (222833599).

Almost surely, 2^445667197 is an apocalyptic number.

It is an amenable number.

445667197 is a deficient number, since it is larger than the sum of its proper divisors (1).

445667197 is an equidigital number, since it uses as much as digits as its factorization.

445667197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1270080, while the sum is 49.

The square root of 445667197 is about 21110.8312721219. The cubic root of 445667197 is about 763.8420386722.

The spelling of 445667197 in words is "four hundred forty-five million, six hundred sixty-seven thousand, one hundred ninety-seven".