1071861 has 16 divisors (see below), whose sum is σ = 1672704. Its totient is φ = 597744.

The previous prime is 1071857. The next prime is 1071871. The reversal of 1071861 is 1681701.

It is not a de Polignac number, because 1071861 - 2² = 1071857 is a prime.

It is a super-2 number, since 2×1071861² = 2297772006642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1071821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 310 + ... + 1496.

It is an arithmetic number, because the mean of its divisors is an integer number (104544).

2^1071861 is an apocalyptic number.

It is an amenable number.

1071861 is a deficient number, since it is larger than the sum of its proper divisors (600843).

1071861 is a wasteful number, since it uses less digits than its factorization.

1071861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1240.

The product of its (nonzero) digits is 336, while the sum is 24.

The square root of 1071861 is about 1035.3072007863. The cubic root of 1071861 is about 102.3401752709.

The spelling of 1071861 in words is "one million, seventy-one thousand, eight hundred sixty-one".