1010861 has 2 divisors, whose sum is σ = 1010862. Its totient is φ = 1010860.

The previous prime is 1010843. The next prime is 1010881. The reversal of 1010861 is 1680101.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 855625 + 155236 = 925^2 + 394^2 .

It is an emirp because it is prime and its reverse (1680101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1010861 - 2⁶ = 1010797 is a prime.

It is a super-2 number, since 2×1010861² = 2043679922642, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1010881) 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 as a sum of consecutive naturals, namely, 505430 + 505431.

It is an arithmetic number, because the mean of its divisors is an integer number (505431).

2^1010861 is an apocalyptic number.

It is an amenable number.

1010861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1010861 is an equidigital number, since it uses as much as digits as its factorization.

1010861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 1010861 is about 1005.4158343690. The cubic root of 1010861 is about 100.3607305037.

Adding to 1010861 its reverse (1680101), we get a palindrome (2690962).

The spelling of 1010861 in words is "one million, ten thousand, eight hundred sixty-one".