687422886 has 8 divisors (see below), whose sum is σ = 1374845784. Its totient is φ = 229140960.

The previous prime is 687422843. The next prime is 687422909. The reversal of 687422886 is 688224786.

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

687422886 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57285235 + ... + 57285246.

It is an arithmetic number, because the mean of its divisors is an integer number (171855723).

Almost surely, 2^687422886 is an apocalyptic number.

687422886 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

687422886 is a wasteful number, since it uses less digits than its factorization.

687422886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114570486.

The product of its digits is 2064384, while the sum is 51.

The square root of 687422886 is about 26218.7506567342. The cubic root of 687422886 is about 882.5540838969.

The spelling of 687422886 in words is "six hundred eighty-seven million, four hundred twenty-two thousand, eight hundred eighty-six".