72719651 has 2 divisors, whose sum is σ = 72719652. Its totient is φ = 72719650.

The previous prime is 72719641. The next prime is 72719653. The reversal of 72719651 is 15691727.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72719651 is a prime.

Together with 72719653, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72719653) 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, 36359825 + 36359826.

It is an arithmetic number, because the mean of its divisors is an integer number (36359826).

Almost surely, 2^72719651 is an apocalyptic number.

72719651 is a deficient number, since it is larger than the sum of its proper divisors (1).

72719651 is an equidigital number, since it uses as much as digits as its factorization.

72719651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26460, while the sum is 38.

The square root of 72719651 is about 8527.5817791447. The cubic root of 72719651 is about 417.3982225285.

The spelling of 72719651 in words is "seventy-two million, seven hundred nineteen thousand, six hundred fifty-one".