897571478 has 4 divisors (see below), whose sum is σ = 1346357220. Its totient is φ = 448785738.

The previous prime is 897571471. The next prime is 897571517. The reversal of 897571478 is 874175798.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897571471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224392868 + ... + 224392871.

It is an arithmetic number, because the mean of its divisors is an integer number (336589305).

Almost surely, 2^897571478 is an apocalyptic number.

897571478 is a deficient number, since it is larger than the sum of its proper divisors (448785742).

897571478 is a wasteful number, since it uses less digits than its factorization.

897571478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448785741.

The product of its digits is 3951360, while the sum is 56.

The square root of 897571478 is about 29959.4972921777. The cubic root of 897571478 is about 964.6201904071.

The spelling of 897571478 in words is "eight hundred ninety-seven million, five hundred seventy-one thousand, four hundred seventy-eight".