72569603 has 2 divisors, whose sum is σ = 72569604. Its totient is φ = 72569602.

The previous prime is 72569599. The next prime is 72569641. The reversal of 72569603 is 30696527.

It is an a-pointer prime, because the next prime (72569641) can be obtained adding 72569603 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72569603 - 2² = 72569599 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (72569503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36284801 + 36284802.

It is an arithmetic number, because the mean of its divisors is an integer number (36284802).

Almost surely, 2^72569603 is an apocalyptic number.

72569603 is a deficient number, since it is larger than the sum of its proper divisors (1).

72569603 is an equidigital number, since it uses as much as digits as its factorization.

72569603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 38.

The square root of 72569603 is about 8518.7794313505. The cubic root of 72569603 is about 417.1109416568.

The spelling of 72569603 in words is "seventy-two million, five hundred sixty-nine thousand, six hundred three".