997803203696 has 160 divisors (see below), whose sum is σ = 2173600672320. Its totient is φ = 440565350400.

The previous prime is 997803203687. The next prime is 997803203759. The reversal of 997803203696 is 696302308799.

It is a super-2 number, since 2×997803203696² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 306731606 + ... + 306734858.

It is an arithmetic number, because the mean of its divisors is an integer number (13585004202).

Almost surely, 2^997803203696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 997803203696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1086800336160).

997803203696 is an abundant number, since it is smaller than the sum of its proper divisors (1175797468624).

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

997803203696 is a wasteful number, since it uses less digits than its factorization.

997803203696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3755 (or 3749 counting only the distinct ones).

The product of its (nonzero) digits is 26453952, while the sum is 62.

The spelling of 997803203696 in words is "nine hundred ninety-seven billion, eight hundred three million, two hundred three thousand, six hundred ninety-six".