72912803 has 2 divisors, whose sum is σ = 72912804. Its totient is φ = 72912802.

The previous prime is 72912799. The next prime is 72912877. The reversal of 72912803 is 30821927.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72912803 - 2² = 72912799 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72912803.

It is not a weakly prime, because it can be changed into another prime (72911803) 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, 36456401 + 36456402.

It is an arithmetic number, because the mean of its divisors is an integer number (36456402).

Almost surely, 2^72912803 is an apocalyptic number.

72912803 is a deficient number, since it is larger than the sum of its proper divisors (1).

72912803 is an equidigital number, since it uses as much as digits as its factorization.

72912803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 72912803 is about 8538.8994021478. The cubic root of 72912803 is about 417.7674488454.

The spelling of 72912803 in words is "seventy-two million, nine hundred twelve thousand, eight hundred three".