11641603 has 4 divisors (see below), whose sum is σ = 11671920. Its totient is φ = 11611288.

The previous prime is 11641589. The next prime is 11641613. The reversal of 11641603 is 30614611.

It is a happy number.

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 11641603 - 2¹⁷ = 11510531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11641613) 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, 14575 + ... + 15352.

It is an arithmetic number, because the mean of its divisors is an integer number (2917980).

Almost surely, 2^11641603 is an apocalyptic number.

11641603 is a deficient number, since it is larger than the sum of its proper divisors (30317).

11641603 is an equidigital number, since it uses as much as digits as its factorization.

11641603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30316.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 11641603 is about 3411.9793375693. The cubic root of 11641603 is about 226.6405393280.

The spelling of 11641603 in words is "eleven million, six hundred forty-one thousand, six hundred three".