72912611 has 2 divisors, whose sum is σ = 72912612. Its totient is φ = 72912610.

The previous prime is 72912571. The next prime is 72912617. The reversal of 72912611 is 11621927.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72912611 - 2⁶ = 72912547 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72912617) 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, 36456305 + 36456306.

It is an arithmetic number, because the mean of its divisors is an integer number (36456306).

Almost surely, 2^72912611 is an apocalyptic number.

72912611 is a deficient number, since it is larger than the sum of its proper divisors (1).

72912611 is an equidigital number, since it uses as much as digits as its factorization.

72912611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512, while the sum is 29.

The square root of 72912611 is about 8538.8881594737. Note that the first 3 decimals coincide. The cubic root of 72912611 is about 417.7670821452.

The spelling of 72912611 in words is "seventy-two million, nine hundred twelve thousand, six hundred eleven".