687410409 has 8 divisors (see below), whose sum is σ = 1047482560. Its totient is φ = 392805936.

The previous prime is 687410393. The next prime is 687410411. The reversal of 687410409 is 904014786.

It is a happy number.

687410409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 687410409 - 2⁴ = 687410393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (687410909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16366894 + ... + 16366935.

It is an arithmetic number, because the mean of its divisors is an integer number (130935320).

Almost surely, 2^687410409 is an apocalyptic number.

It is an amenable number.

687410409 is a deficient number, since it is larger than the sum of its proper divisors (360072151).

687410409 is a wasteful number, since it uses less digits than its factorization.

687410409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32733839.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 687410409 is about 26218.5127152552. The cubic root of 687410409 is about 882.5487442948.

The spelling of 687410409 in words is "six hundred eighty-seven million, four hundred ten thousand, four hundred nine".