1087684 has 18 divisors (see below), whose sum is σ = 2062410. Its totient is φ = 501696.

The previous prime is 1087679. The next prime is 1087687. The reversal of 1087684 is 4867801.

It is a happy number.

1087684 is nontrivially palindromic in base 12.

It can be written as a sum of positive squares in 3 ways, for example, as 107584 + 980100 = 328^2 + 990^2 .

It is a zygodrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (1087687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 129 + ... + 1480.

2^1087684 is an apocalyptic number.

It is an amenable number.

1087684 is a deficient number, since it is larger than the sum of its proper divisors (974726).

1087684 is a wasteful number, since it uses less digits than its factorization.

1087684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1639 (or 1624 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 1087684 is about 1042.9208982468. The cubic root of 1087684 is about 102.8413052482.

It can be divided in two parts, 1087 and 684, that added together give a palindrome (1771).

The spelling of 1087684 in words is "one million, eighty-seven thousand, six hundred eighty-four".