1087671205 has 4 divisors (see below), whose sum is σ = 1305205452. Its totient is φ = 870136960.

The previous prime is 1087671199. The next prime is 1087671209. The reversal of 1087671205 is 5021767801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5021767801 = 63439 ⋅79159.

It can be written as a sum of positive squares in 2 ways, for example, as 208311489 + 879359716 = 14433^2 + 29654^2 .

It is not a de Polignac number, because 1087671205 - 2¹⁵ = 1087638437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1087671209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108767116 + ... + 108767125.

It is an arithmetic number, because the mean of its divisors is an integer number (326301363).

Almost surely, 2^1087671205 is an apocalyptic number.

It is an amenable number.

1087671205 is a deficient number, since it is larger than the sum of its proper divisors (217534247).

1087671205 is an equidigital number, since it uses as much as digits as its factorization.

1087671205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217534246.

The product of its (nonzero) digits is 23520, while the sum is 37.

The square root of 1087671205 is about 32979.8605970371. The cubic root of 1087671205 is about 1028.4090198775.

The spelling of 1087671205 in words is "one billion, eighty-seven million, six hundred seventy-one thousand, two hundred five".