897711589 has 2 divisors, whose sum is σ = 897711590. Its totient is φ = 897711588.

The previous prime is 897711569. The next prime is 897711599. The reversal of 897711589 is 985117798.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 695218689 + 202492900 = 26367^2 + 14230^2 .

It is a cyclic number.

It is not a de Polignac number, because 897711589 - 2⁷ = 897711461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (897711569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 448855794 + 448855795.

It is an arithmetic number, because the mean of its divisors is an integer number (448855795).

Almost surely, 2^897711589 is an apocalyptic number.

It is an amenable number.

897711589 is a deficient number, since it is larger than the sum of its proper divisors (1).

897711589 is an equidigital number, since it uses as much as digits as its factorization.

897711589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1270080, while the sum is 55.

The square root of 897711589 is about 29961.8355412348. The cubic root of 897711589 is about 964.6703802326.

The spelling of 897711589 in words is "eight hundred ninety-seven million, seven hundred eleven thousand, five hundred eighty-nine".