403601 has 4 divisors (see below), whose sum is σ = 440304. Its totient is φ = 366900.

The previous prime is 403591. The next prime is 403603. The reversal of 403601 is 106304.

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.

It is a cyclic number.

It is not a de Polignac number, because 403601 - 2⁶ = 403537 is a prime.

It is a Duffinian number.

It is a Curzon number.

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

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18335 + ... + 18356.

It is an arithmetic number, because the mean of its divisors is an integer number (110076).

2⁴⁰³⁶⁰¹ is an apocalyptic number.

It is an amenable number.

403601 is a deficient number, since it is larger than the sum of its proper divisors (36703).

403601 is a wasteful number, since it uses less digits than its factorization.

403601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36702.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 403601 is about 635.2959940059. The cubic root of 403601 is about 73.9010730677.

Adding to 403601 its reverse (106304), we get a palindrome (509905).

The spelling of 403601 in words is "four hundred three thousand, six hundred one".