697077565689856 has 52 divisors (see below), whose sum is σ = 1501214557805452. Its totient is φ = 321728107216896.

The previous prime is 697077565689851. The next prime is 697077565689899. The reversal of 697077565689856 is 658986565770796.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 247936012128256 + 449141553561600 = 15745984^2 + 21192960^2 .

It is a tau number, because it is divible by the number of its divisors (52).

It is not an unprimeable number, because it can be changed into a prime (697077565689851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6545521851 + ... + 6545628346.

Almost surely, 2^{697077565689856} is an apocalyptic number.

It is an amenable number.

697077565689856 is an abundant number, since it is smaller than the sum of its proper divisors (804136992115596).

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

697077565689856 is a wasteful number, since it uses less digits than its factorization.

697077565689856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13091150234 (or 13091150212 counting only the distinct ones).

The product of its (nonzero) digits is 288054144000, while the sum is 94.

The spelling of 697077565689856 in words is "six hundred ninety-seven trillion, seventy-seven billion, five hundred sixty-five million, six hundred eighty-nine thousand, eight hundred fifty-six".