1367881 has 2 divisors, whose sum is σ = 1367882. Its totient is φ = 1367880.

The previous prime is 1367869. The next prime is 1367887. The reversal of 1367881 is 1887631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1334025 + 33856 = 1155^2 + 184^2 .

It is a cyclic number.

It is not a de Polignac number, because 1367881 - 2¹³ = 1359689 is a prime.

It is a super-2 number, since 2×1367881² = 3742196860322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1367887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 683940 + 683941.

It is an arithmetic number, because the mean of its divisors is an integer number (683941).

2^1367881 is an apocalyptic number.

It is an amenable number.

1367881 is a deficient number, since it is larger than the sum of its proper divisors (1).

1367881 is an equidigital number, since it uses as much as digits as its factorization.

1367881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 34.

The square root of 1367881 is about 1169.5644488441. The cubic root of 1367881 is about 111.0067631082.

The spelling of 1367881 in words is "one million, three hundred sixty-seven thousand, eight hundred eighty-one".