403613 has 6 divisors (see below), whose sum is σ = 469566. Its totient is φ = 345912.

The previous prime is 403607. The next prime is 403621. The reversal of 403613 is 316304.

It can be written as a sum of positive squares in only one way, i.e., 362404 + 41209 = 602^2 + 203^2 .

It is not a de Polignac number, because 403613 - 2⁶ = 403549 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 403591 and 403600.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 403613.

It is not an unprimeable number, because it can be changed into a prime (403603) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4070 + ... + 4167.

It is an arithmetic number, because the mean of its divisors is an integer number (78261).

2⁴⁰³⁶¹³ is an apocalyptic number.

It is an amenable number.

403613 is a deficient number, since it is larger than the sum of its proper divisors (65953).

403613 is an equidigital number, since it uses as much as digits as its factorization.

403613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8251 (or 8244 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 403613 is about 635.3054383523. The cubic root of 403613 is about 73.9018054776.

Adding to 403613 its reverse (316304), we get a palindrome (719917).

The spelling of 403613 in words is "four hundred three thousand, six hundred thirteen".