1361005 has 4 divisors (see below), whose sum is σ = 1633212. Its totient is φ = 1088800.

The previous prime is 1360981. The next prime is 1361011. The reversal of 1361005 is 5001631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 724201 + 636804 = 851^2 + 798^2 .

It is not a de Polignac number, because 1361005 - 2⁵ = 1360973 is a prime.

It is a super-2 number, since 2×1361005² = 3704669220050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1361005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136096 + ... + 136105.

It is an arithmetic number, because the mean of its divisors is an integer number (408303).

2^1361005 is an apocalyptic number.

It is an amenable number.

1361005 is a deficient number, since it is larger than the sum of its proper divisors (272207).

1361005 is an equidigital number, since it uses as much as digits as its factorization.

1361005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272206.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 1361005 is about 1166.6211895898. The cubic root of 1361005 is about 110.8204493789.

Adding to 1361005 its reverse (5001631), we get a palindrome (6362636).

The spelling of 1361005 in words is "one million, three hundred sixty-one thousand, five".