687434262434786 has 8 divisors (see below), whose sum is σ = 1031159090419920. Its totient is φ = 343714565628148.

The previous prime is 687434262434747. The next prime is 687434262434819.

687434262434786 is nontrivially palindromic in base 10.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1282459676 + ... + 1282995591.

It is an arithmetic number, because the mean of its divisors is an integer number (128894886302490).

Almost surely, 2^{687434262434786} is an apocalyptic number.

687434262434786 is a deficient number, since it is larger than the sum of its proper divisors (343724827985134).

687434262434786 is a wasteful number, since it uses less digits than its factorization.

687434262434786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2565589248.

The product of its digits is 6242697216, while the sum is 74.

The spelling of 687434262434786 in words is "six hundred eighty-seven trillion, four hundred thirty-four billion, two hundred sixty-two million, four hundred thirty-four thousand, seven hundred eighty-six".