687918628683001 has 4 divisors (see below), whose sum is σ = 688252084152192. Its totient is φ = 687585173213812.

The previous prime is 687918628682963. The next prime is 687918628683053. The reversal of 687918628683001 is 100386826819786.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 687918628683001 - 2³⁵ = 687884268944633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (687918628683071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166727731501 + ... + 166727735626.

It is an arithmetic number, because the mean of its divisors is an integer number (172063021038048).

Almost surely, 2^{687918628683001} is an apocalyptic number.

It is an amenable number.

687918628683001 is a deficient number, since it is larger than the sum of its proper divisors (333455469191).

687918628683001 is a wasteful number, since it uses less digits than its factorization.

687918628683001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333455469190.

The product of its (nonzero) digits is 334430208, while the sum is 73.

The spelling of 687918628683001 in words is "six hundred eighty-seven trillion, nine hundred eighteen billion, six hundred twenty-eight million, six hundred eighty-three thousand, one".