897861996 has 30 divisors (see below), whose sum is σ = 2347189460. Its totient is φ = 299287224.

The previous prime is 897861961. The next prime is 897861997. The reversal of 897861996 is 699168798.

897861996 is a `hidden beast` number, since 8 + 9 + 7 + 8 + 619 + 9 + 6 = 666.

It is a super-2 number, since 2×897861996² = 1612312327722208032, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (897861997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1385266 + ... + 1385913.

Almost surely, 2^897861996 is an apocalyptic number.

It is an amenable number.

897861996 is an abundant number, since it is smaller than the sum of its proper divisors (1449327464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

897861996 is a wasteful number, since it uses less digits than its factorization.

897861996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2771195 (or 2771184 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 63.

The square root of 897861996 is about 29964.3454125065. The cubic root of 897861996 is about 964.7242524254.

The spelling of 897861996 in words is "eight hundred ninety-seven million, eight hundred sixty-one thousand, nine hundred ninety-six".