897481764 has 27 divisors (see below), whose sum is σ = 2269088913. Its totient is φ = 299100672.

The previous prime is 897481751. The next prime is 897481787. The reversal of 897481764 is 467184798.

It is a happy number.

The square root of 897481764 is 29958.

It is a perfect power (a square), and thus also a powerful number.

897481764 is a `hidden beast` number, since 8 + 97 + 481 + 76 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 312228900 + 585252864 = 17670^2 + 24192^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 897481764.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 177252 + ... + 182244.

Almost surely, 2^897481764 is an apocalyptic number.

897481764 is the 29958-th square number.

It is an amenable number.

897481764 is an abundant number, since it is smaller than the sum of its proper divisors (1371607149).

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

897481764 is an equidigital number, since it uses as much as digits as its factorization.

897481764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9996 (or 4998 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The cubic root of 897481764 is about 964.5880507869.

The spelling of 897481764 in words is "eight hundred ninety-seven million, four hundred eighty-one thousand, seven hundred sixty-four".