1087771 has 8 divisors (see below), whose sum is σ = 1142064. Its totient is φ = 1034880.

The previous prime is 1087753. The next prime is 1087781. The reversal of 1087771 is 1777801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1087771 - 2⁹ = 1087259 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1087741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1455 + ... + 2071.

It is an arithmetic number, because the mean of its divisors is an integer number (142758).

2^1087771 is an apocalyptic number.

1087771 is a deficient number, since it is larger than the sum of its proper divisors (54293).

1087771 is an equidigital number, since it uses as much as digits as its factorization.

1087771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701.

The product of its (nonzero) digits is 2744, while the sum is 31.

The square root of 1087771 is about 1042.9626071916. The cubic root of 1087771 is about 102.8440471459.

The spelling of 1087771 in words is "one million, eighty-seven thousand, seven hundred seventy-one".