897565544 has 16 divisors (see below), whose sum is σ = 1740968100. Its totient is φ = 433307392.

The previous prime is 897565523. The next prime is 897565579. The reversal of 897565544 is 445565798.

It can be written as a sum of positive squares in 2 ways, for example, as 893412100 + 4153444 = 29890^2 + 2038^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1934177 + ... + 1934640.

Almost surely, 2^897565544 is an apocalyptic number.

It is an amenable number.

897565544 is a deficient number, since it is larger than the sum of its proper divisors (843402556).

897565544 is a wasteful number, since it uses less digits than its factorization.

897565544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3868852 (or 3868848 counting only the distinct ones).

The product of its digits is 6048000, while the sum is 53.

The square root of 897565544 is about 29959.3982583095. The cubic root of 897565544 is about 964.6180646456.

The spelling of 897565544 in words is "eight hundred ninety-seven million, five hundred sixty-five thousand, five hundred forty-four".