897663433 has 2 divisors, whose sum is σ = 897663434. Its totient is φ = 897663432.

The previous prime is 897663421. The next prime is 897663439. The reversal of 897663433 is 334366798.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 627652809 + 270010624 = 25053^2 + 16432^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-897663433 is a prime.

It is not a weakly prime, because it can be changed into another prime (897663439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 448831716 + 448831717.

It is an arithmetic number, because the mean of its divisors is an integer number (448831717).

Almost surely, 2^897663433 is an apocalyptic number.

It is an amenable number.

897663433 is a deficient number, since it is larger than the sum of its proper divisors (1).

897663433 is an equidigital number, since it uses as much as digits as its factorization.

897663433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1959552, while the sum is 49.

The square root of 897663433 is about 29961.0319081303. The cubic root of 897663433 is about 964.6531306326.

The spelling of 897663433 in words is "eight hundred ninety-seven million, six hundred sixty-three thousand, four hundred thirty-three".