697981078366272 has 168 divisors, whose sum is σ = 2005735767235200. Its totient is φ = 232067556830208.

The previous prime is 697981078366223. The next prime is 697981078366303. The reversal of 697981078366272 is 272663870189796.

It is a happy number.

697981078366272 is a `hidden beast` number, since 6 + 97 + 9 + 81 + 0 + 78 + 366 + 27 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 697981078366191 and 697981078366200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1512754873 + ... + 1513216199.

It is an arithmetic number, because the mean of its divisors is an integer number (11938903376400).

Almost surely, 2^{697981078366272} 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 697981078366272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1002867883617600).

697981078366272 is an abundant number, since it is smaller than the sum of its proper divisors (1307754688868928).

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

697981078366272 is a wasteful number, since it uses less digits than its factorization.

697981078366272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468033 (or 468020 counting only the distinct ones).

The product of its (nonzero) digits is 4608866304, while the sum is 81.

The spelling of 697981078366272 in words is "six hundred ninety-seven trillion, nine hundred eighty-one billion, seventy-eight million, three hundred sixty-six thousand, two hundred seventy-two".