1363613 has 4 divisors (see below), whose sum is σ = 1367100. Its totient is φ = 1360128.

The previous prime is 1363603. The next prime is 1363627. The reversal of 1363613 is 3163631.

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 1006009 + 357604 = 1003^2 + 598^2 .

It is a cyclic number.

It is not a de Polignac number, because 1363613 - 2²⁰ = 315037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1363603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1070 + ... + 1967.

It is an arithmetic number, because the mean of its divisors is an integer number (341775).

2^1363613 is an apocalyptic number.

It is an amenable number.

1363613 is a deficient number, since it is larger than the sum of its proper divisors (3487).

1363613 is an equidigital number, since it uses as much as digits as its factorization.

1363613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3486.

The product of its digits is 972, while the sum is 23.

The square root of 1363613 is about 1167.7384124880. The cubic root of 1363613 is about 110.8911900739.

The spelling of 1363613 in words is "one million, three hundred sixty-three thousand, six hundred thirteen".