897543877 has 2 divisors, whose sum is σ = 897543878. Its totient is φ = 897543876.

The previous prime is 897543827. The next prime is 897543901. The reversal of 897543877 is 778345798.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 750431236 + 147112641 = 27394^2 + 12129^2 .

It is a cyclic number.

It is not a de Polignac number, because 897543877 - 2¹¹ = 897541829 is a prime.

It is a super-2 number, since 2×897543877² = 1611170022280382258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (897543827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 448771938 + 448771939.

It is an arithmetic number, because the mean of its divisors is an integer number (448771939).

Almost surely, 2^897543877 is an apocalyptic number.

It is an amenable number.

897543877 is a deficient number, since it is larger than the sum of its proper divisors (1).

897543877 is an equidigital number, since it uses as much as digits as its factorization.

897543877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11854080, while the sum is 58.

The square root of 897543877 is about 29959.0366500660. The cubic root of 897543877 is about 964.6103027063.

The spelling of 897543877 in words is "eight hundred ninety-seven million, five hundred forty-three thousand, eight hundred seventy-seven".