897808964605 has 32 divisors (see below), whose sum is σ = 1275775660800. Its totient is φ = 593786798592.

The previous prime is 897808964603. The next prime is 897808964623. The reversal of 897808964605 is 506469808798.

It is a cyclic number.

It is not a de Polignac number, because 897808964605 - 2¹ = 897808964603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897808964603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3992200 + ... + 4211089.

It is an arithmetic number, because the mean of its divisors is an integer number (39867989400).

Almost surely, 2^897808964605 is an apocalyptic number.

It is an amenable number.

897808964605 is a deficient number, since it is larger than the sum of its proper divisors (377966696195).

897808964605 is a wasteful number, since it uses less digits than its factorization.

897808964605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8203413.

The product of its (nonzero) digits is 209018880, while the sum is 70.

It can be divided in two parts, 89780 and 8964605, that multiplied together give a square (804842236900 = 897130²).

The spelling of 897808964605 in words is "eight hundred ninety-seven billion, eight hundred eight million, nine hundred sixty-four thousand, six hundred five".