897789620 has 48 divisors (see below), whose sum is σ = 2320445568. Its totient is φ = 284135040.

The previous prime is 897789619. The next prime is 897789649. The reversal of 897789620 is 26987798.

897789620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244826 + ... + 248465.

It is an arithmetic number, because the mean of its divisors is an integer number (48342616).

Almost surely, 2^897789620 is an apocalyptic number.

It is an amenable number.

897789620 is an abundant number, since it is smaller than the sum of its proper divisors (1422655948).

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

897789620 is a wasteful number, since it uses less digits than its factorization.

897789620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493320 (or 493318 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 56.

The square root of 897789620 is about 29963.1376861636. The cubic root of 897789620 is about 964.6983298230.

The spelling of 897789620 in words is "eight hundred ninety-seven million, seven hundred eighty-nine thousand, six hundred twenty".