687506319445 has 8 divisors (see below), whose sum is σ = 900008272800. Its totient is φ = 500004595920.

The previous prime is 687506319421. The next prime is 687506319463. The reversal of 687506319445 is 544913605786.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 687506319445 - 2²⁹ = 686969448533 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 687506319445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6250057395 + ... + 6250057504.

It is an arithmetic number, because the mean of its divisors is an integer number (112501034100).

Almost surely, 2^687506319445 is an apocalyptic number.

It is an amenable number.

687506319445 is a deficient number, since it is larger than the sum of its proper divisors (212501953355).

687506319445 is a wasteful number, since it uses less digits than its factorization.

687506319445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12500114915.

The product of its (nonzero) digits is 21772800, while the sum is 58.

The spelling of 687506319445 in words is "six hundred eighty-seven billion, five hundred six million, three hundred nineteen thousand, four hundred forty-five".