687673418471 has 32 divisors (see below), whose sum is σ = 780062875200. Its totient is φ = 601748904960.

The previous prime is 687673418429. The next prime is 687673418473. The reversal of 687673418471 is 174814376786.

It is not a de Polignac number, because 687673418471 - 2¹⁸ = 687673156327 is a prime.

It is a super-3 number, since 3×687673418471³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687673418473) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18242675 + ... + 18280331.

It is an arithmetic number, because the mean of its divisors is an integer number (24376964850).

Almost surely, 2^687673418471 is an apocalyptic number.

687673418471 is a deficient number, since it is larger than the sum of its proper divisors (92389456729).

687673418471 is a wasteful number, since it uses less digits than its factorization.

687673418471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38579.

The product of its digits is 37933056, while the sum is 62.

The spelling of 687673418471 in words is "six hundred eighty-seven billion, six hundred seventy-three million, four hundred eighteen thousand, four hundred seventy-one".