961603 has 4 divisors (see below), whose sum is σ = 968760. Its totient is φ = 954448.

The previous prime is 961601. The next prime is 961613. The reversal of 961603 is 306169.

961603 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 961603 - 2¹ = 961601 is a prime.

It is a Duffinian number.

It is a plaindrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (961601) 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, 3373 + ... + 3646.

It is an arithmetic number, because the mean of its divisors is an integer number (242190).

2⁹⁶¹⁶⁰³ is an apocalyptic number.

961603 is a deficient number, since it is larger than the sum of its proper divisors (7157).

961603 is a wasteful number, since it uses less digits than its factorization.

961603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7156.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 961603 is about 980.6135834262. The cubic root of 961603 is about 98.7033599118.

The spelling of 961603 in words is "nine hundred sixty-one thousand, six hundred three".