1087858 has 4 divisors (see below), whose sum is σ = 1631790. Its totient is φ = 543928.

The previous prime is 1087843. The next prime is 1087861. The reversal of 1087858 is 8587801.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1087849 + 9 = 1043^2 + 3^2 .

It is a plaindrome in base 12.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271963 + ... + 271966.

2^1087858 is an apocalyptic number.

1087858 is a deficient number, since it is larger than the sum of its proper divisors (543932).

1087858 is an equidigital number, since it uses as much as digits as its factorization.

1087858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543931.

The product of its (nonzero) digits is 17920, while the sum is 37.

The square root of 1087858 is about 1043.0043144685. The cubic root of 1087858 is about 102.8467888975.

The spelling of 1087858 in words is "one million, eighty-seven thousand, eight hundred fifty-eight".