1087506 has 60 divisors (see below), whose sum is σ = 2855358. Its totient is φ = 308448.

The previous prime is 1087487. The next prime is 1087517. The reversal of 1087506 is 6057801.

It can be written as a sum of positive squares in only one way, i.e., 893025 + 194481 = 945^2 + 441^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 1087506.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 7870 + ... + 8006.

2^1087506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1087506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1427679).

1087506 is an abundant number, since it is smaller than the sum of its proper divisors (1767852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1087506 is a wasteful number, since it uses less digits than its factorization.

1087506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 1087506 is about 1042.8355575066. The cubic root of 1087506 is about 102.8356949327.

The spelling of 1087506 in words is "one million, eighty-seven thousand, five hundred six".