897870518 has 4 divisors (see below), whose sum is σ = 1346805780. Its totient is φ = 448935258.

The previous prime is 897870503. The next prime is 897870557. The reversal of 897870518 is 815078798.

It is a happy number.

897870518 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 815078798 = 2 ⋅407539399.

It is a self number, because there is not a number n which added to its sum of digits gives 897870518.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224467628 + ... + 224467631.

It is an arithmetic number, because the mean of its divisors is an integer number (336701445).

Almost surely, 2^897870518 is an apocalyptic number.

897870518 is a deficient number, since it is larger than the sum of its proper divisors (448935262).

897870518 is a wasteful number, since it uses less digits than its factorization.

897870518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448935261.

The product of its (nonzero) digits is 1128960, while the sum is 53.

The square root of 897870518 is about 29964.4876145079. The cubic root of 897870518 is about 964.7273046221.

The spelling of 897870518 in words is "eight hundred ninety-seven million, eight hundred seventy thousand, five hundred eighteen".