72203603 has 2 divisors, whose sum is σ = 72203604. Its totient is φ = 72203602.

The previous prime is 72203597. The next prime is 72203623. The reversal of 72203603 is 30630227.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72203603 - 2¹⁰ = 72202579 is a prime.

It is not a weakly prime, because it can be changed into another prime (72203623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36101801 + 36101802.

It is an arithmetic number, because the mean of its divisors is an integer number (36101802).

Almost surely, 2^72203603 is an apocalyptic number.

72203603 is a deficient number, since it is larger than the sum of its proper divisors (1).

72203603 is an equidigital number, since it uses as much as digits as its factorization.

72203603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 72203603 is about 8497.2703264048. The cubic root of 72203603 is about 416.4085356549.

The spelling of 72203603 in words is "seventy-two million, two hundred three thousand, six hundred three".