997342087896 has 512 divisors, whose sum is σ = 3581411328000. Its totient is φ = 249569164800.

The previous prime is 997342087871. The next prime is 997342087901. The reversal of 997342087896 is 698780243799.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 118066345 + ... + 118074791.

It is an arithmetic number, because the mean of its divisors is an integer number (6994944000).

Almost surely, 2^997342087896 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 997342087896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1790705664000).

997342087896 is an abundant number, since it is smaller than the sum of its proper divisors (2584069240104).

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

997342087896 is a wasteful number, since it uses less digits than its factorization.

997342087896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8740 (or 8730 counting only the distinct ones).

The product of its (nonzero) digits is 329204736, while the sum is 72.

The spelling of 997342087896 in words is "nine hundred ninety-seven billion, three hundred forty-two million, eighty-seven thousand, eight hundred ninety-six".