687011 has 8 divisors (see below), whose sum is σ = 757680. Its totient is φ = 618912.

The previous prime is 687007. The next prime is 687013. The reversal of 687011 is 110786.

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

It is a cyclic number.

It is not a de Polignac number, because 687011 - 2² = 687007 is a prime.

It is a super-2 number, since 2×687011² = 943968228242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (687013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56 + ... + 1173.

It is an arithmetic number, because the mean of its divisors is an integer number (94710).

2⁶⁸⁷⁰¹¹ is an apocalyptic number.

687011 is a deficient number, since it is larger than the sum of its proper divisors (70669).

687011 is a wasteful number, since it uses less digits than its factorization.

687011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 687011 is about 828.8612670405. The cubic root of 687011 is about 88.2377780826.

Adding to 687011 its reverse (110786), we get a palindrome (797797).

The spelling of 687011 in words is "six hundred eighty-seven thousand, eleven".