897659137 has 2 divisors, whose sum is σ = 897659138. Its totient is φ = 897659136.

The previous prime is 897659107. The next prime is 897659167. The reversal of 897659137 is 731956798.

It is a balanced prime because it is at equal distance from previous prime (897659107) and next prime (897659167).

It can be written as a sum of positive squares in only one way, i.e., 829497601 + 68161536 = 28801^2 + 8256^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-897659137 is a prime.

It is not a weakly prime, because it can be changed into another prime (897659107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 448829568 + 448829569.

It is an arithmetic number, because the mean of its divisors is an integer number (448829569).

Almost surely, 2^897659137 is an apocalyptic number.

It is an amenable number.

897659137 is a deficient number, since it is larger than the sum of its proper divisors (1).

897659137 is an equidigital number, since it uses as much as digits as its factorization.

897659137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2857680, while the sum is 55.

The square root of 897659137 is about 29960.9602149197. The cubic root of 897659137 is about 964.6515917647.

The spelling of 897659137 in words is "eight hundred ninety-seven million, six hundred fifty-nine thousand, one hundred thirty-seven".