1587860 has 12 divisors (see below), whose sum is σ = 3334548. Its totient is φ = 635136.

The previous prime is 1587847. The next prime is 1587869. The reversal of 1587860 is 687851.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 806404 + 781456 = 898^2 + 884^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1587860.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1587869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39677 + ... + 39716.

It is an arithmetic number, because the mean of its divisors is an integer number (277879).

2^1587860 is an apocalyptic number.

1587860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1587860 is an abundant number, since it is smaller than the sum of its proper divisors (1746688).

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

1587860 is a wasteful number, since it uses less digits than its factorization.

1587860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79402 (or 79400 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 1587860 is about 1260.1031703793. The cubic root of 1587860 is about 116.6641450702.

Subtracting from 1587860 its reverse (687851), we obtain a palindrome (900009).

The spelling of 1587860 in words is "one million, five hundred eighty-seven thousand, eight hundred sixty".