72440603 has 2 divisors, whose sum is σ = 72440604. Its totient is φ = 72440602.

The previous prime is 72440591. The next prime is 72440609. The reversal of 72440603 is 30604427.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72440603 is a prime.

It is not a weakly prime, because it can be changed into another prime (72440609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36220301 + 36220302.

It is an arithmetic number, because the mean of its divisors is an integer number (36220302).

Almost surely, 2^72440603 is an apocalyptic number.

72440603 is a deficient number, since it is larger than the sum of its proper divisors (1).

72440603 is an equidigital number, since it uses as much as digits as its factorization.

72440603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 72440603 is about 8511.2045563481. The cubic root of 72440603 is about 416.8636424044.

The spelling of 72440603 in words is "seventy-two million, four hundred forty thousand, six hundred three".