1087857 has 16 divisors (see below), whose sum is σ = 1650880. Its totient is φ = 707616.

The previous prime is 1087843. The next prime is 1087861. The reversal of 1087857 is 7587801.

It is not a de Polignac number, because 1087857 - 2⁴ = 1087841 is a prime.

It is a Duffinian number.

1087857 is a lucky number.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (1087817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 693 + ... + 1629.

It is an arithmetic number, because the mean of its divisors is an integer number (103180).

2^1087857 is an apocalyptic number.

It is an amenable number.

1087857 is a deficient number, since it is larger than the sum of its proper divisors (563023).

1087857 is an equidigital number, since it uses as much as digits as its factorization.

1087857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989 (or 983 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 36.

The square root of 1087857 is about 1043.0038350840. The cubic root of 1087857 is about 102.8467573840.

The spelling of 1087857 in words is "one million, eighty-seven thousand, eight hundred fifty-seven".