1270861 has 2 divisors, whose sum is σ = 1270862. Its totient is φ = 1270860.

The previous prime is 1270859. The next prime is 1270879. The reversal of 1270861 is 1680721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1177225 + 93636 = 1085^2 + 306^2 .

It is a cyclic number.

It is not a de Polignac number, because 1270861 - 2¹ = 1270859 is a prime.

Together with 1270859, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1270361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 635430 + 635431.

It is an arithmetic number, because the mean of its divisors is an integer number (635431).

2^1270861 is an apocalyptic number.

It is an amenable number.

1270861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1270861 is an equidigital number, since it uses as much as digits as its factorization.

1270861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 1270861 is about 1127.3247092120. The cubic root of 1270861 is about 108.3176803157.

It can be divided in two parts, 12708 and 61, that added together give a square (12769 = 113²).

The spelling of 1270861 in words is "one million, two hundred seventy thousand, eight hundred sixty-one".