10267861 has 2 divisors, whose sum is σ = 10267862. Its totient is φ = 10267860.

The previous prime is 10267843. The next prime is 10267871. The reversal of 10267861 is 16876201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7257636 + 3010225 = 2694^2 + 1735^2 .

It is an emirp because it is prime and its reverse (16876201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10267861 - 2²¹ = 8170709 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10267801) 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, 5133930 + 5133931.

It is an arithmetic number, because the mean of its divisors is an integer number (5133931).

Almost surely, 2^10267861 is an apocalyptic number.

It is an amenable number.

10267861 is a deficient number, since it is larger than the sum of its proper divisors (1).

10267861 is an equidigital number, since it uses as much as digits as its factorization.

10267861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 10267861 is about 3204.3503241687. The cubic root of 10267861 is about 217.3501747041.

The spelling of 10267861 in words is "ten million, two hundred sixty-seven thousand, eight hundred sixty-one".