687940552366615 has 8 divisors (see below), whose sum is σ = 825547313641248. Its totient is φ = 550340008025760.

The previous prime is 687940552366609. The next prime is 687940552366649. The reversal of 687940552366615 is 516663255049786.

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

It is not a de Polignac number, because 687940552366615 - 2¹¹ = 687940552364567 is a prime.

It is a Duffinian number.

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, 1553989996 + ... + 1554432625.

It is an arithmetic number, because the mean of its divisors is an integer number (103193414205156).

It is a 1-persistent number, because it is pandigital, but 2⋅687940552366615 = 1375881104733230 is not.

Almost surely, 2^{687940552366615} is an apocalyptic number.

687940552366615 is a deficient number, since it is larger than the sum of its proper divisors (137606761274633).

687940552366615 is a wasteful number, since it uses less digits than its factorization.

687940552366615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3108466889.

The product of its (nonzero) digits is 1959552000, while the sum is 73.

The spelling of 687940552366615 in words is "six hundred eighty-seven trillion, nine hundred forty billion, five hundred fifty-two million, three hundred sixty-six thousand, six hundred fifteen".