1367861 has 4 divisors (see below), whose sum is σ = 1492224. Its totient is φ = 1243500.

The previous prime is 1367857. The next prime is 1367869. The reversal of 1367861 is 1687631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1687631 = 11 ⋅153421.

It is a cyclic number.

It is not a de Polignac number, because 1367861 - 2² = 1367857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1367869) 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 in 3 ways as a sum of consecutive naturals, for example, 62165 + ... + 62186.

It is an arithmetic number, because the mean of its divisors is an integer number (373056).

2^1367861 is an apocalyptic number.

1367861 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1367861 is a deficient number, since it is larger than the sum of its proper divisors (124363).

1367861 is a wasteful number, since it uses less digits than its factorization.

1367861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124362.

The product of its digits is 6048, while the sum is 32.

The square root of 1367861 is about 1169.5558986214. Note that the first 3 decimals coincide. The cubic root of 1367861 is about 111.0062220899.

It can be divided in two parts, 136 and 7861, that added together give a palindrome (7997).

The spelling of 1367861 in words is "one million, three hundred sixty-seven thousand, eight hundred sixty-one".