897948071 has 2 divisors, whose sum is σ = 897948072. Its totient is φ = 897948070.

The previous prime is 897948061. The next prime is 897948091. The reversal of 897948071 is 170849798.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-897948071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (897948001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 448974035 + 448974036.

It is an arithmetic number, because the mean of its divisors is an integer number (448974036).

Almost surely, 2^897948071 is an apocalyptic number.

897948071 is a deficient number, since it is larger than the sum of its proper divisors (1).

897948071 is an equidigital number, since it uses as much as digits as its factorization.

897948071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1016064, while the sum is 53.

The square root of 897948071 is about 29965.7816684297. The cubic root of 897948071 is about 964.7550797267.

The spelling of 897948071 in words is "eight hundred ninety-seven million, nine hundred forty-eight thousand, seventy-one".