687016102 has 4 divisors (see below), whose sum is σ = 1030524156. Its totient is φ = 343508050.

The previous prime is 687016097. The next prime is 687016139. The reversal of 687016102 is 201610786.

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

It is a super-2 number, since 2×687016102² = 943982248814548808, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 171754024 + ... + 171754027.

It is an arithmetic number, because the mean of its divisors is an integer number (257631039).

Almost surely, 2^687016102 is an apocalyptic number.

687016102 is a deficient number, since it is larger than the sum of its proper divisors (343508054).

687016102 is a wasteful number, since it uses less digits than its factorization.

687016102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343508053.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 687016102 is about 26210.9920071713. The cubic root of 687016102 is about 882.3799651092.

Adding to 687016102 its reverse (201610786), we get a palindrome (888626888).

The spelling of 687016102 in words is "six hundred eighty-seven million, sixteen thousand, one hundred two".