897543826 has 4 divisors (see below), whose sum is σ = 1346315742. Its totient is φ = 448771912.

The previous prime is 897543821. The next prime is 897543827. The reversal of 897543826 is 628345798.

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

It can be written as a sum of positive squares in only one way, i.e., 761704801 + 135839025 = 27599^2 + 11655^2 .

It is not an unprimeable number, because it can be changed into a prime (897543821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224385955 + ... + 224385958.

Almost surely, 2^897543826 is an apocalyptic number.

897543826 is a deficient number, since it is larger than the sum of its proper divisors (448771916).

897543826 is a wasteful number, since it uses less digits than its factorization.

897543826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448771915.

The product of its digits is 2903040, while the sum is 52.

The square root of 897543826 is about 29959.0357989038. The cubic root of 897543826 is about 964.6102844360.

The spelling of 897543826 in words is "eight hundred ninety-seven million, five hundred forty-three thousand, eight hundred twenty-six".