397603 has 4 divisors (see below), whose sum is σ = 401800. Its totient is φ = 393408.

The previous prime is 397597. The next prime is 397633. The reversal of 397603 is 306793.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-397603 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397633) 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, 1953 + ... + 2146.

It is an arithmetic number, because the mean of its divisors is an integer number (100450).

2³⁹⁷⁶⁰³ is an apocalyptic number.

397603 is a deficient number, since it is larger than the sum of its proper divisors (4197).

397603 is an equidigital number, since it uses as much as digits as its factorization.

397603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4196.

The product of its (nonzero) digits is 3402, while the sum is 28.

The square root of 397603 is about 630.5576896684. The cubic root of 397603 is about 73.5331579456.

It can be divided in two parts, 397 and 603, that added together give a cube (1000 = 10³).

The spelling of 397603 in words is "three hundred ninety-seven thousand, six hundred three".