687954467 has 4 divisors (see below), whose sum is σ = 694384056. Its totient is φ = 681524880.

The previous prime is 687954439. The next prime is 687954473. The reversal of 687954467 is 764459786.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 687954467 - 2¹² = 687950371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (687954427) 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 3 ways as a sum of consecutive naturals, for example, 3214634 + ... + 3214847.

It is an arithmetic number, because the mean of its divisors is an integer number (173596014).

Almost surely, 2^687954467 is an apocalyptic number.

687954467 is a deficient number, since it is larger than the sum of its proper divisors (6429589).

687954467 is a wasteful number, since it uses less digits than its factorization.

687954467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6429588.

The product of its digits is 10160640, while the sum is 56.

The square root of 687954467 is about 26228.8861181713. The cubic root of 687954467 is about 882.7815169727.

The spelling of 687954467 in words is "six hundred eighty-seven million, nine hundred fifty-four thousand, four hundred sixty-seven".