897809203672 has 32 divisors (see below), whose sum is σ = 1693743760800. Its totient is φ = 446145063424.

The previous prime is 897809203667. The next prime is 897809203679. The reversal of 897809203672 is 276302908798.

It is a super-2 number, since 2×897809203672² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 897809203672.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897809203679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8837904 + ... + 8938912.

It is an arithmetic number, because the mean of its divisors is an integer number (52929492525).

Almost surely, 2^897809203672 is an apocalyptic number.

It is an amenable number.

897809203672 is a deficient number, since it is larger than the sum of its proper divisors (795934557128).

897809203672 is a wasteful number, since it uses less digits than its factorization.

897809203672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107835 (or 107831 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 61.

The spelling of 897809203672 in words is "eight hundred ninety-seven billion, eight hundred nine million, two hundred three thousand, six hundred seventy-two".