687009422 has 8 divisors (see below), whose sum is σ = 1124197272. Its totient is φ = 312277000.

The previous prime is 687009413. The next prime is 687009431. The reversal of 687009422 is 224900786.

It is an interprime number because it is at equal distance from previous prime (687009413) and next prime (687009431).

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

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, 15613829 + ... + 15613872.

It is an arithmetic number, because the mean of its divisors is an integer number (140524659).

Almost surely, 2^687009422 is an apocalyptic number.

687009422 is a deficient number, since it is larger than the sum of its proper divisors (437187850).

687009422 is a wasteful number, since it uses less digits than its factorization.

687009422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31227714.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 687009422 is about 26210.8645794068. The cubic root of 687009422 is about 882.3771052455.

The spelling of 687009422 in words is "six hundred eighty-seven million, nine thousand, four hundred twenty-two".