897867556 has 12 divisors (see below), whose sum is σ = 1573886860. Its totient is φ = 448185600.

The previous prime is 897867499. The next prime is 897867571. The reversal of 897867556 is 655768798.

It can be written as a sum of positive squares in 2 ways, for example, as 315417600 + 582449956 = 17760^2 + 24134^2 .

It is a super-2 number, since 2×897867556² = 1612332296234826272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 897867494 and 897867503.

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, 184341 + ... + 189148.

Almost surely, 2^897867556 is an apocalyptic number.

It is an amenable number.

897867556 is a deficient number, since it is larger than the sum of its proper divisors (676019304).

897867556 is a wasteful number, since it uses less digits than its factorization.

897867556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374094 (or 374092 counting only the distinct ones).

The product of its digits is 25401600, while the sum is 61.

The square root of 897867556 is about 29964.4381892937. The cubic root of 897867556 is about 964.7262437692.

The spelling of 897867556 in words is "eight hundred ninety-seven million, eight hundred sixty-seven thousand, five hundred fifty-six".