1071885 has 16 divisors (see below), whose sum is σ = 1805760. Its totient is φ = 541440.

The previous prime is 1071871. The next prime is 1071899. The reversal of 1071885 is 5881701.

1071885 = T₁₅ + T₁₆ + ... + T₁₈₅.

It is an interprime number because it is at equal distance from previous prime (1071871) and next prime (1071899).

It is not a de Polignac number, because 1071885 - 2⁶ = 1071821 is a prime.

It is a super-2 number, since 2×1071885² = 2297874906450, which contains 22 as substring.

1071885 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1596 + ... + 2165.

It is an arithmetic number, because the mean of its divisors is an integer number (112860).

2^1071885 is an apocalyptic number.

1071885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1071885 is a deficient number, since it is larger than the sum of its proper divisors (733875).

1071885 is a wasteful number, since it uses less digits than its factorization.

1071885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3788.

The product of its (nonzero) digits is 2240, while the sum is 30.

The square root of 1071885 is about 1035.3187914841. The cubic root of 1071885 is about 102.3409390969.

The spelling of 1071885 in words is "one million, seventy-one thousand, eight hundred eighty-five".