897798866 has 8 divisors (see below), whose sum is σ = 1425915900. Its totient is φ = 422493568.

The previous prime is 897798857. The next prime is 897798931. The reversal of 897798866 is 668897798.

It can be written as a sum of positive squares in 2 ways, for example, as 880368241 + 17430625 = 29671^2 + 4175^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 897798796 and 897798805.

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, 13202891 + ... + 13202958.

Almost surely, 2^897798866 is an apocalyptic number.

897798866 is a deficient number, since it is larger than the sum of its proper divisors (528117034).

897798866 is a wasteful number, since it uses less digits than its factorization.

897798866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26405868.

The product of its digits is 73156608, while the sum is 68.

The square root of 897798866 is about 29963.2919753488. The cubic root of 897798866 is about 964.7016415009.

The spelling of 897798866 in words is "eight hundred ninety-seven million, seven hundred ninety-eight thousand, eight hundred sixty-six".