697872197969856 has 3360 divisors, whose sum is σ = 2777906136563712. Its totient is φ = 168560349511680.

The previous prime is 697872197969819. The next prime is 697872197969867. The reversal of 697872197969856 is 658969791278796.

697872197969856 is a `hidden beast` number, since 6 + 97 + 87 + 219 + 7 + 96 + 98 + 56 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 479 ways as a sum of consecutive naturals, for example, 886749933495 + ... + 886749934281.

Almost surely, 2^{697872197969856} 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 697872197969856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1388953068281856).

697872197969856 is an abundant number, since it is smaller than the sum of its proper divisors (2080033938593856).

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

697872197969856 is a wasteful number, since it uses less digits than its factorization.

697872197969856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037 (or 999 counting only the distinct ones).

The product of its digits is 311098475520, while the sum is 99.

The spelling of 697872197969856 in words is "six hundred ninety-seven trillion, eight hundred seventy-two billion, one hundred ninety-seven million, nine hundred sixty-nine thousand, eight hundred fifty-six".