687016101 has 4 divisors (see below), whose sum is σ = 916021472. Its totient is φ = 458010732.

The previous prime is 687016097. The next prime is 687016139. The reversal of 687016101 is 101610786.

It is a happy number.

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 not a de Polignac number, because 687016101 - 2² = 687016097 is a prime.

It is a super-2 number, since 2×687016101² = 943982246066484402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687016151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114502681 + ... + 114502686.

It is an arithmetic number, because the mean of its divisors is an integer number (229005368).

Almost surely, 2^687016101 is an apocalyptic number.

It is an amenable number.

687016101 is a deficient number, since it is larger than the sum of its proper divisors (229005371).

687016101 is a wasteful number, since it uses less digits than its factorization.

687016101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229005370.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 687016101 is about 26210.9919880954. The cubic root of 687016101 is about 882.3799646811.

Adding to 687016101 its reverse (101610786), we get a palindrome (788626887).

The spelling of 687016101 in words is "six hundred eighty-seven million, sixteen thousand, one hundred one".