687085434465 has 8 divisors (see below), whose sum is σ = 1099336695168. Its totient is φ = 366445565040.

The previous prime is 687085434461. The next prime is 687085434487. The reversal of 687085434465 is 564434580786.

It is a happy number.

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

It is not a de Polignac number, because 687085434465 - 2² = 687085434461 is a prime.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 687085434399 and 687085434408.

It is not an unprimeable number, because it can be changed into a prime (687085434461) 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, 22902847801 + ... + 22902847830.

It is an arithmetic number, because the mean of its divisors is an integer number (137417086896).

Almost surely, 2^687085434465 is an apocalyptic number.

It is an amenable number.

687085434465 is a deficient number, since it is larger than the sum of its proper divisors (412251260703).

687085434465 is a wasteful number, since it uses less digits than its factorization.

687085434465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45805695639.

The product of its (nonzero) digits is 77414400, while the sum is 60.

The spelling of 687085434465 in words is "six hundred eighty-seven billion, eighty-five million, four hundred thirty-four thousand, four hundred sixty-five".