687880371 has 8 divisors (see below), whose sum is σ = 921926800. Its totient is φ = 456210432.

The previous prime is 687880337. The next prime is 687880373. The reversal of 687880371 is 173088786.

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

It is not a de Polignac number, because 687880371 - 2⁶ = 687880307 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 687880371.

It is not an unprimeable number, because it can be changed into a prime (687880373) 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 7 ways as a sum of consecutive naturals, for example, 593446 + ... + 594603.

It is an arithmetic number, because the mean of its divisors is an integer number (115240850).

Almost surely, 2^687880371 is an apocalyptic number.

687880371 is a deficient number, since it is larger than the sum of its proper divisors (234046429).

687880371 is a wasteful number, since it uses less digits than its factorization.

687880371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1188245.

The product of its (nonzero) digits is 451584, while the sum is 48.

The square root of 687880371 is about 26227.4735916367. The cubic root of 687880371 is about 882.7498225652.

The spelling of 687880371 in words is "six hundred eighty-seven million, eight hundred eighty thousand, three hundred seventy-one".