687344486401 has 32 divisors (see below), whose sum is σ = 735467765760. Its totient is φ = 640981845504.

The previous prime is 687344486393. The next prime is 687344486417. The reversal of 687344486401 is 104684443786.

It is a cyclic number.

It is not a de Polignac number, because 687344486401 - 2³ = 687344486393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (687344486431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81599076 + ... + 81607498.

It is an arithmetic number, because the mean of its divisors is an integer number (22983367680).

Almost surely, 2^687344486401 is an apocalyptic number.

It is an amenable number.

687344486401 is a deficient number, since it is larger than the sum of its proper divisors (48123279359).

687344486401 is a wasteful number, since it uses less digits than its factorization.

687344486401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9085.

The product of its (nonzero) digits is 12386304, while the sum is 55.

The spelling of 687344486401 in words is "six hundred eighty-seven billion, three hundred forty-four million, four hundred eighty-six thousand, four hundred one".