897788887794 has 96 divisors (see below), whose sum is σ = 2053406609280. Its totient is φ = 282707905536.

The previous prime is 897788887757. The next prime is 897788887811. The reversal of 897788887794 is 497788887798.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 248211874 + ... + 248215490.

It is an arithmetic number, because the mean of its divisors is an integer number (21389652180).

Almost surely, 2^897788887794 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 897788887794, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1026703304640).

897788887794 is an abundant number, since it is smaller than the sum of its proper divisors (1155617721486).

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

897788887794 is a wasteful number, since it uses less digits than its factorization.

897788887794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5504 (or 5501 counting only the distinct ones).

The product of its digits is 25491013632, while the sum is 90.

The spelling of 897788887794 in words is "eight hundred ninety-seven billion, seven hundred eighty-eight million, eight hundred eighty-seven thousand, seven hundred ninety-four".