1361613 has 20 divisors (see below), whose sum is σ = 2061440. Its totient is φ = 798600.

The previous prime is 1361609. The next prime is 1361629. The reversal of 1361613 is 3161631.

It is not a de Polignac number, because 1361613 - 2² = 1361609 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 1361613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 43908 + ... + 43938.

It is an arithmetic number, because the mean of its divisors is an integer number (103072).

2^1361613 is an apocalyptic number.

It is an amenable number.

1361613 is a deficient number, since it is larger than the sum of its proper divisors (699827).

1361613 is an frugal number, since it uses more digits than its factorization.

1361613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78 (or 45 counting only the distinct ones).

The product of its digits is 324, while the sum is 21.

The square root of 1361613 is about 1166.8817420801. The cubic root of 1361613 is about 110.8369491474.

The spelling of 1361613 in words is "one million, three hundred sixty-one thousand, six hundred thirteen".