687266972001 has 12 divisors (see below), whose sum is σ = 1003873106340. Its totient is φ = 453029913600.

The previous prime is 687266971981. The next prime is 687266972057. The reversal of 687266972001 is 100279662786.

It can be written as a sum of positive squares in 2 ways, for example, as 139110350625 + 548156621376 = 372975^2 + 740376^2 .

It is not a de Polignac number, because 687266972001 - 2⁵ = 687266971969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (687266972071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 429004800 + ... + 429006401.

It is an arithmetic number, because the mean of its divisors is an integer number (83656092195).

Almost surely, 2^687266972001 is an apocalyptic number.

It is an amenable number.

687266972001 is a deficient number, since it is larger than the sum of its proper divisors (316606134339).

687266972001 is a wasteful number, since it uses less digits than its factorization.

687266972001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858011296 (or 858011293 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The spelling of 687266972001 in words is "six hundred eighty-seven billion, two hundred sixty-six million, nine hundred seventy-two thousand, one".